./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 efd11941ceab8dc56d9aa56f1950f714738654ba ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:56:30,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:56:30,326 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:56:30,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:56:30,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:56:30,334 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:56:30,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:56:30,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:56:30,337 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:56:30,337 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:56:30,338 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:56:30,338 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:56:30,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:56:30,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:56:30,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:56:30,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:56:30,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:56:30,343 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:56:30,345 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:56:30,346 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:56:30,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:56:30,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:56:30,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:56:30,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:56:30,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:56:30,349 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:56:30,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:56:30,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:56:30,350 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:56:30,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:56:30,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:56:30,352 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:56:30,352 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:56:30,352 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:56:30,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:56:30,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:56:30,353 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 11:56:30,360 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:56:30,360 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:56:30,361 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:56:30,361 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:56:30,361 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:56:30,361 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:56:30,362 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:56:30,362 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:56:30,363 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:56:30,363 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:56:30,364 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:56:30,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:56:30,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:56:30,365 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_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 -> efd11941ceab8dc56d9aa56f1950f714738654ba [2018-11-10 11:56:30,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:56:30,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:56:30,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:56:30,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:56:30,394 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:56:30,395 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-10 11:56:30,433 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/data/443c93f13/a4adfb7ebd1347bfbc3b13f9355e444e/FLAG2ef4351ab [2018-11-10 11:56:30,836 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:56:30,837 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-10 11:56:30,841 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/data/443c93f13/a4adfb7ebd1347bfbc3b13f9355e444e/FLAG2ef4351ab [2018-11-10 11:56:30,852 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/data/443c93f13/a4adfb7ebd1347bfbc3b13f9355e444e [2018-11-10 11:56:30,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:56:30,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:56:30,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:56:30,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:56:30,858 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:56:30,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:56:30" (1/1) ... [2018-11-10 11:56:30,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3498524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:30, skipping insertion in model container [2018-11-10 11:56:30,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:56:30" (1/1) ... [2018-11-10 11:56:30,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:56:30,880 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:56:30,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:56:30,995 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:56:31,009 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:56:31,019 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:56:31,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31 WrapperNode [2018-11-10 11:56:31,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:56:31,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:56:31,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:56:31,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:56:31,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... [2018-11-10 11:56:31,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:56:31,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:56:31,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:56:31,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:56:31,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-10 11:56:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:56:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:56:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:56:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:56:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 11:56:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 11:56:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:56:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 11:56:31,326 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:56:31,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:31 BoogieIcfgContainer [2018-11-10 11:56:31,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:56:31,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:56:31,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:56:31,329 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:56:31,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:56:30" (1/3) ... [2018-11-10 11:56:31,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea0e0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:56:31, skipping insertion in model container [2018-11-10 11:56:31,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:31" (2/3) ... [2018-11-10 11:56:31,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea0e0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:56:31, skipping insertion in model container [2018-11-10 11:56:31,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:31" (3/3) ... [2018-11-10 11:56:31,333 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_true-unreach-call.c [2018-11-10 11:56:31,340 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:56:31,344 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:56:31,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:56:31,381 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:56:31,381 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:56:31,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:56:31,382 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:56:31,382 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:56:31,382 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:56:31,382 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:56:31,382 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:56:31,382 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:56:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-11-10 11:56:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-10 11:56:31,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:31,403 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:31,404 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:31,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:31,408 INFO L82 PathProgramCache]: Analyzing trace with hash 50357199, now seen corresponding path program 1 times [2018-11-10 11:56:31,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:31,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:31,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:31,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 11:56:31,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:56:31,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 11:56:31,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 11:56:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 11:56:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:56:31,567 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-11-10 11:56:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:31,586 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2018-11-10 11:56:31,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 11:56:31,587 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 55 [2018-11-10 11:56:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:31,594 INFO L225 Difference]: With dead ends: 72 [2018-11-10 11:56:31,594 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 11:56:31,596 INFO L605 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 [2018-11-10 11:56:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 11:56:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-10 11:56:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 11:56:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-11-10 11:56:31,624 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 55 [2018-11-10 11:56:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:31,626 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-11-10 11:56:31,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 11:56:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-11-10 11:56:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-10 11:56:31,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:31,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:31,629 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:31,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1970704373, now seen corresponding path program 1 times [2018-11-10 11:56:31,629 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:31,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:31,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:31,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 11:56:31,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:56:31,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 11:56:31,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 11:56:31,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 11:56:31,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 11:56:31,712 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 3 states. [2018-11-10 11:56:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:31,726 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-11-10 11:56:31,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 11:56:31,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-11-10 11:56:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:31,728 INFO L225 Difference]: With dead ends: 68 [2018-11-10 11:56:31,728 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 11:56:31,729 INFO L605 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 [2018-11-10 11:56:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 11:56:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-10 11:56:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 11:56:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-11-10 11:56:31,734 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 57 [2018-11-10 11:56:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:31,734 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-11-10 11:56:31,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 11:56:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-11-10 11:56:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-10 11:56:31,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:31,736 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:31,737 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:31,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:31,738 INFO L82 PathProgramCache]: Analyzing trace with hash 466700504, now seen corresponding path program 1 times [2018-11-10 11:56:31,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:31,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:31,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:31,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:56:31,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:56:31,965 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 [2018-11-10 11:56:31,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:32,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:56:32,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 17 [2018-11-10 11:56:32,283 INFO L477 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 [2018-11-10 11:56:32,284 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:32,293 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:32,303 INFO L477 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 21 treesize of output 17 [2018-11-10 11:56:32,306 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-10 11:56:32,306 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:32,310 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:32,318 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:32,318 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-10 11:56:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 11:56:32,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 11:56:32,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2018-11-10 11:56:32,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 11:56:32,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 11:56:32,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2018-11-10 11:56:32,341 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 18 states. [2018-11-10 11:56:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:33,054 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2018-11-10 11:56:33,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 11:56:33,057 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2018-11-10 11:56:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:33,059 INFO L225 Difference]: With dead ends: 94 [2018-11-10 11:56:33,059 INFO L226 Difference]: Without dead ends: 84 [2018-11-10 11:56:33,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 11:56:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-10 11:56:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 55. [2018-11-10 11:56:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-10 11:56:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-11-10 11:56:33,066 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 59 [2018-11-10 11:56:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:33,067 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-11-10 11:56:33,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 11:56:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-11-10 11:56:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-10 11:56:33,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:33,068 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:33,068 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:33,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash 836750320, now seen corresponding path program 1 times [2018-11-10 11:56:33,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:33,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:33,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:33,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:33,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:56:33,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:56:33,213 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 [2018-11-10 11:56:33,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:33,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:56:33,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 17 [2018-11-10 11:56:33,356 INFO L477 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 [2018-11-10 11:56:33,356 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:33,359 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:33,367 INFO L477 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 21 treesize of output 17 [2018-11-10 11:56:33,369 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-10 11:56:33,370 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:33,373 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:33,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:33,379 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-10 11:56:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 11:56:33,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:56:33,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2018-11-10 11:56:33,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 11:56:33,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 11:56:33,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-10 11:56:33,404 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 20 states. [2018-11-10 11:56:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:34,132 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2018-11-10 11:56:34,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 11:56:34,132 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2018-11-10 11:56:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:34,133 INFO L225 Difference]: With dead ends: 100 [2018-11-10 11:56:34,133 INFO L226 Difference]: Without dead ends: 90 [2018-11-10 11:56:34,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 11:56:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-10 11:56:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 58. [2018-11-10 11:56:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 11:56:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-11-10 11:56:34,141 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 62 [2018-11-10 11:56:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:34,141 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-11-10 11:56:34,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 11:56:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-11-10 11:56:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-10 11:56:34,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:34,143 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:34,143 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:34,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:34,143 INFO L82 PathProgramCache]: Analyzing trace with hash -190230056, now seen corresponding path program 2 times [2018-11-10 11:56:34,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:34,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:34,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:34,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:34,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:56:34,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:56:34,336 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 [2018-11-10 11:56:34,341 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:56:34,364 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:56:34,364 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:56:34,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:56:34,537 INFO L477 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 21 treesize of output 17 [2018-11-10 11:56:34,539 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-10 11:56:34,539 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:34,542 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:34,543 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 17 [2018-11-10 11:56:34,545 INFO L477 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 [2018-11-10 11:56:34,545 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 11:56:34,548 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 11:56:34,553 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 11:56:34,553 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:43, output treesize:21 [2018-11-10 11:56:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:56:34,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:56:34,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2018-11-10 11:56:34,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-10 11:56:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-10 11:56:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2018-11-10 11:56:34,591 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 27 states. [2018-11-10 11:56:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:35,431 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2018-11-10 11:56:35,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-10 11:56:35,431 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 65 [2018-11-10 11:56:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:35,432 INFO L225 Difference]: With dead ends: 106 [2018-11-10 11:56:35,432 INFO L226 Difference]: Without dead ends: 96 [2018-11-10 11:56:35,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=410, Invalid=2346, Unknown=0, NotChecked=0, Total=2756 [2018-11-10 11:56:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-10 11:56:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 61. [2018-11-10 11:56:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 11:56:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2018-11-10 11:56:35,439 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 65 [2018-11-10 11:56:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:35,440 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2018-11-10 11:56:35,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-10 11:56:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2018-11-10 11:56:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-10 11:56:35,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:35,441 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:35,441 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:56:35,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1910562064, now seen corresponding path program 3 times [2018-11-10 11:56:35,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:35,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:35,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:35,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:56:35,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:56:35,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:56:35,614 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/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 [2018-11-10 11:56:35,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:56:35,638 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-10 11:56:35,638 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:56:35,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:56:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-10 11:56:35,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:56:35,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2018-11-10 11:56:35,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-10 11:56:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-10 11:56:35,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2018-11-10 11:56:35,855 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 27 states. [2018-11-10 11:56:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:37,177 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2018-11-10 11:56:37,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-10 11:56:37,177 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 68 [2018-11-10 11:56:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:37,177 INFO L225 Difference]: With dead ends: 108 [2018-11-10 11:56:37,177 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 11:56:37,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=610, Invalid=3812, Unknown=0, NotChecked=0, Total=4422 [2018-11-10 11:56:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 11:56:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 11:56:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 11:56:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 11:56:37,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2018-11-10 11:56:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:37,179 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:56:37,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-10 11:56:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:56:37,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 11:56:37,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 11:56:37,367 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-10 11:56:37,367 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-10 11:56:37,367 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-10 11:56:37,367 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L428 ceAbstractionStarter]: At program point initENTRY(lines 11 18) the Hoare annotation is: true [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,368 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,369 INFO L425 ceAbstractionStarter]: For program point L9-2(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,369 INFO L425 ceAbstractionStarter]: For program point L9-3(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,369 INFO L425 ceAbstractionStarter]: For program point L9-4(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,369 INFO L425 ceAbstractionStarter]: For program point L9-5(line 9) no Hoare annotation was computed. [2018-11-10 11:56:37,369 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:56:37,377 INFO L425 ceAbstractionStarter]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2018-11-10 11:56:37,377 INFO L428 ceAbstractionStarter]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2018-11-10 11:56:37,377 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-10 11:56:37,377 INFO L425 ceAbstractionStarter]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2018-11-10 11:56:37,377 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:56:37,377 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 11:56:37,378 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L35-2(line 35) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L428 ceAbstractionStarter]: At program point L33-1(line 33) the Hoare annotation is: true [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L428 ceAbstractionStarter]: At program point L33-3(line 33) the Hoare annotation is: true [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L33-4(line 33) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point L35-6(lines 35 44) no Hoare annotation was computed. [2018-11-10 11:56:37,378 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2018-11-10 11:56:37,379 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2018-11-10 11:56:37,379 INFO L421 ceAbstractionStarter]: At program point L42(lines 31 50) the Hoare annotation is: false [2018-11-10 11:56:37,379 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2018-11-10 11:56:37,379 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-10 11:56:37,379 INFO L421 ceAbstractionStarter]: At program point L38-4(lines 38 40) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.offset main_~pa~0.offset) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0)))) [2018-11-10 11:56:37,379 INFO L421 ceAbstractionStarter]: At program point L38-5(lines 38 40) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset))) (and (= main_~pd2~0.offset main_~pa~0.offset) (= main_~pd2~0.offset main_~pd1~0.offset) (<= main_~i~0 .cse0) (<= .cse0 main_~i~0) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0))))) [2018-11-10 11:56:37,379 INFO L428 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: true [2018-11-10 11:56:37,379 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 30 50) the Hoare annotation is: true [2018-11-10 11:56:37,379 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L35-1(line 35) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L428 ceAbstractionStarter]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2018-11-10 11:56:37,380 INFO L425 ceAbstractionStarter]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2018-11-10 11:56:37,389 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 11:56:37,393 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 11:56:37,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:56:37 BoogieIcfgContainer [2018-11-10 11:56:37,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:56:37,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:56:37,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:56:37,397 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:56:37,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:31" (3/4) ... [2018-11-10 11:56:37,401 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 11:56:37,405 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure init [2018-11-10 11:56:37,405 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 11:56:37,406 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2018-11-10 11:56:37,406 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 11:56:37,406 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-10 11:56:37,410 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-10 11:56:37,410 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 11:56:37,410 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 11:56:37,410 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 11:56:37,448 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d6c01775-3f81-4e6b-b517-fb1b57b01d8c/bin-2019/uautomizer/witness.graphml [2018-11-10 11:56:37,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:56:37,449 INFO L168 Benchmark]: Toolchain (without parser) took 6595.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 963.0 MB in the beginning and 1.2 GB in the end (delta: -241.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:56:37,450 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:56:37,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.46 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:37,451 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:37,451 INFO L168 Benchmark]: RCFGBuilder took 279.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:37,451 INFO L168 Benchmark]: TraceAbstraction took 6067.81 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.7 MB). Peak memory consumption was 335.6 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:37,452 INFO L168 Benchmark]: Witness Printer took 52.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 424.1 kB). Peak memory consumption was 424.1 kB. Max. memory is 11.5 GB. [2018-11-10 11:56:37,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.46 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 279.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6067.81 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.7 MB). Peak memory consumption was 335.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 424.1 kB). Peak memory consumption was 424.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 38]: Loop Invariant [2018-11-10 11:56:37,457 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 11:56:37,458 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((pd2 == pd1 && pd2 == pa) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 289 SDtfs, 414 SDslu, 2039 SDs, 0 SdLazy, 1494 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 236 SyntacticMatches, 8 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2035 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, 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, 6 MinimizatonAttempts, 96 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 25 PreInvPairs, 40 NumberOfFragments, 77 HoareAnnotationTreeSize, 25 FomulaSimplifications, 4340 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 667 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 620 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 610 ConstructedInterpolants, 0 QuantifiedInterpolants, 163244 SizeOfPredicates, 39 NumberOfNonLiveVariables, 763 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 105/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...