./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i --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_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 3607a70e53f56c4b4860f9fca9676a925474c3df ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:30:54,929 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:30:54,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:30:54,938 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:30:54,938 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:30:54,939 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:30:54,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:30:54,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:30:54,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:30:54,943 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:30:54,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:30:54,944 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:30:54,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:30:54,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:30:54,946 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:30:54,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:30:54,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:30:54,948 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:30:54,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:30:54,950 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:30:54,951 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:30:54,952 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:30:54,953 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:30:54,953 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:30:54,953 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:30:54,954 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:30:54,955 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:30:54,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:30:54,956 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:30:54,956 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:30:54,956 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:30:54,957 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:30:54,957 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:30:54,957 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:30:54,958 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:30:54,958 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:30:54,958 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 03:30:54,967 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:30:54,968 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:30:54,968 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:30:54,968 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:30:54,969 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:30:54,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:30:54,969 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:30:54,969 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:30:54,969 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:30:54,970 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:30:54,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:30:54,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:30:54,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:30:54,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:30:54,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:30:54,972 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 03:30:54,972 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:30:54,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:30:54,972 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_3017d878-713a-4455-96d8-e67c92fdf495/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 -> 3607a70e53f56c4b4860f9fca9676a925474c3df [2018-11-10 03:30:54,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:30:55,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:30:55,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:30:55,007 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:30:55,008 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:30:55,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i [2018-11-10 03:30:55,051 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/data/5dd9c04d4/d0a49a4afbc74d1497374c6847ecfbc0/FLAG46f7e8216 [2018-11-10 03:30:55,444 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:30:55,445 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/sv-benchmarks/c/loop-invgen/apache-escape-absolute_true-unreach-call_true-termination.i [2018-11-10 03:30:55,451 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/data/5dd9c04d4/d0a49a4afbc74d1497374c6847ecfbc0/FLAG46f7e8216 [2018-11-10 03:30:55,461 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/data/5dd9c04d4/d0a49a4afbc74d1497374c6847ecfbc0 [2018-11-10 03:30:55,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:30:55,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:30:55,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:30:55,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:30:55,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:30:55,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d89bcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55, skipping insertion in model container [2018-11-10 03:30:55,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:30:55,491 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:30:55,595 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:30:55,597 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:30:55,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:30:55,625 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:30:55,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55 WrapperNode [2018-11-10 03:30:55,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:30:55,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:30:55,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:30:55,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:30:55,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... [2018-11-10 03:30:55,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:30:55,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:30:55,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:30:55,647 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:30:55,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 03:30:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:30:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:30:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:30:55,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:30:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 03:30:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 03:30:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:30:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 03:30:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:30:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:30:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:30:55,946 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:30:55,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:30:55 BoogieIcfgContainer [2018-11-10 03:30:55,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:30:55,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:30:55,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:30:55,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:30:55,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:30:55" (1/3) ... [2018-11-10 03:30:55,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0130b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:30:55, skipping insertion in model container [2018-11-10 03:30:55,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:55" (2/3) ... [2018-11-10 03:30:55,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0130b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:30:55, skipping insertion in model container [2018-11-10 03:30:55,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:30:55" (3/3) ... [2018-11-10 03:30:55,950 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute_true-unreach-call_true-termination.i [2018-11-10 03:30:55,956 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:30:55,961 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:30:55,971 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:30:55,991 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:30:55,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:30:55,992 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:30:55,992 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:30:55,992 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:30:55,992 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:30:55,992 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:30:55,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:30:55,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:30:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-11-10 03:30:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 03:30:56,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:56,013 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:30:56,015 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:56,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash 398758246, now seen corresponding path program 1 times [2018-11-10 03:30:56,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:56,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:56,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:30:56,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:30:56,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:30:56,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:30:56,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:30:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:30:56,154 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2018-11-10 03:30:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:56,336 INFO L93 Difference]: Finished difference Result 116 states and 211 transitions. [2018-11-10 03:30:56,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:30:56,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-10 03:30:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:56,343 INFO L225 Difference]: With dead ends: 116 [2018-11-10 03:30:56,343 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 03:30:56,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:30:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 03:30:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2018-11-10 03:30:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 03:30:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2018-11-10 03:30:56,375 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 16 [2018-11-10 03:30:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:56,376 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2018-11-10 03:30:56,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:30:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2018-11-10 03:30:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 03:30:56,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:56,377 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:30:56,377 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:56,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:56,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1482520181, now seen corresponding path program 1 times [2018-11-10 03:30:56,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:56,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:56,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:30:56,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:30:56,441 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 03:30:56,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:30:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:30:56,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 03:30:56,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-10 03:30:56,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 03:30:56,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 03:30:56,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 03:30:56,535 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand 9 states. [2018-11-10 03:30:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:56,760 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2018-11-10 03:30:56,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:30:56,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-10 03:30:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:56,764 INFO L225 Difference]: With dead ends: 65 [2018-11-10 03:30:56,764 INFO L226 Difference]: Without dead ends: 63 [2018-11-10 03:30:56,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-10 03:30:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-10 03:30:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-10 03:30:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 03:30:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2018-11-10 03:30:56,775 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 21 [2018-11-10 03:30:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:56,775 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2018-11-10 03:30:56,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 03:30:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2018-11-10 03:30:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-10 03:30:56,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:56,776 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 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 03:30:56,777 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:56,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 693279400, now seen corresponding path program 1 times [2018-11-10 03:30:56,777 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:56,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:56,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-10 03:30:56,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:30:56,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 03:30:56,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 03:30:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 03:30:56,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:30:56,820 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2018-11-10 03:30:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:56,843 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2018-11-10 03:30:56,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 03:30:56,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-11-10 03:30:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:56,848 INFO L225 Difference]: With dead ends: 93 [2018-11-10 03:30:56,848 INFO L226 Difference]: Without dead ends: 63 [2018-11-10 03:30:56,849 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 03:30:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-10 03:30:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-10 03:30:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 03:30:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2018-11-10 03:30:56,858 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 51 [2018-11-10 03:30:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:56,858 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2018-11-10 03:30:56,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 03:30:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2018-11-10 03:30:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 03:30:56,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:56,860 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 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 03:30:56,860 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:56,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1023624178, now seen corresponding path program 1 times [2018-11-10 03:30:56,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:56,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:56,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-10 03:30:56,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:30:56,943 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 03:30:56,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:56,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:30:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-10 03:30:57,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 03:30:57,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-10 03:30:57,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 03:30:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 03:30:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-10 03:30:57,041 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand 9 states. [2018-11-10 03:30:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:57,217 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2018-11-10 03:30:57,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:30:57,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-11-10 03:30:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:57,219 INFO L225 Difference]: With dead ends: 71 [2018-11-10 03:30:57,219 INFO L226 Difference]: Without dead ends: 69 [2018-11-10 03:30:57,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-10 03:30:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-10 03:30:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2018-11-10 03:30:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-10 03:30:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2018-11-10 03:30:57,231 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 52 [2018-11-10 03:30:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:57,232 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-11-10 03:30:57,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 03:30:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2018-11-10 03:30:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-10 03:30:57,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:57,234 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 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, 1] [2018-11-10 03:30:57,234 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:57,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1445669058, now seen corresponding path program 1 times [2018-11-10 03:30:57,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:57,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:57,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:57,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:57,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-11-10 03:30:57,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:30:57,329 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 03:30:57,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:57,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:30:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-10 03:30:57,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 03:30:57,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-10 03:30:57,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 03:30:57,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 03:30:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-10 03:30:57,413 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 9 states. [2018-11-10 03:30:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:57,519 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2018-11-10 03:30:57,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:30:57,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2018-11-10 03:30:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:57,521 INFO L225 Difference]: With dead ends: 78 [2018-11-10 03:30:57,521 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 03:30:57,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-10 03:30:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 03:30:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2018-11-10 03:30:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-10 03:30:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2018-11-10 03:30:57,529 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 88 [2018-11-10 03:30:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:57,530 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2018-11-10 03:30:57,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 03:30:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2018-11-10 03:30:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-10 03:30:57,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:30:57,532 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1] [2018-11-10 03:30:57,534 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:30:57,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:30:57,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1059167203, now seen corresponding path program 1 times [2018-11-10 03:30:57,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:30:57,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:30:57,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:57,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:57,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:30:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-11-10 03:30:57,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:30:57,600 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/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 03:30:57,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:30:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:30:57,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:30:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-10 03:30:57,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 03:30:57,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2018-11-10 03:30:57,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 03:30:57,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 03:30:57,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:30:57,693 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand 10 states. [2018-11-10 03:30:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:30:57,837 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2018-11-10 03:30:57,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:30:57,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2018-11-10 03:30:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:30:57,838 INFO L225 Difference]: With dead ends: 78 [2018-11-10 03:30:57,838 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 03:30:57,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-10 03:30:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 03:30:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 03:30:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 03:30:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 03:30:57,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2018-11-10 03:30:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:30:57,839 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 03:30:57,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 03:30:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 03:30:57,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 03:30:57,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 03:30:58,022 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 03:30:58,022 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:30:58,022 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:30:58,022 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 03:30:58,022 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:30:58,022 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:30:58,023 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 69) no Hoare annotation was computed. [2018-11-10 03:30:58,023 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-10 03:30:58,023 INFO L425 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2018-11-10 03:30:58,023 INFO L421 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,023 INFO L421 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,023 INFO L421 ceAbstractionStarter]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (<= 1 main_~cp~0)) (.cse1 (<= 0 main_~scheme~0)) (.cse2 (<= (+ main_~cp~0 2) main_~urilen~0)) (.cse3 (<= (+ main_~c~0 2) main_~tokenlen~0))) (or (and .cse0 (= main_~c~0 0) .cse1 .cse2 .cse3) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3))) [2018-11-10 03:30:58,023 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 03:30:58,023 INFO L421 ceAbstractionStarter]: At program point L53-1(line 53) the Hoare annotation is: (let ((.cse0 (<= 1 main_~cp~0)) (.cse1 (<= 0 main_~scheme~0)) (.cse2 (<= (+ main_~cp~0 2) main_~urilen~0)) (.cse3 (<= (+ main_~c~0 2) main_~tokenlen~0))) (or (and .cse0 (= main_~c~0 0) .cse1 .cse2 .cse3) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3))) [2018-11-10 03:30:58,023 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L54(line 54) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 11 69) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 69) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 66) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 69) the Hoare annotation is: true [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L55(lines 55 61) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L22(lines 11 69) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L55-1(lines 55 61) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 65) no Hoare annotation was computed. [2018-11-10 03:30:58,024 INFO L421 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (<= 1 main_~cp~0)) (.cse1 (<= 0 main_~scheme~0))) (or (and (= main_~urilen~0 (+ main_~cp~0 1)) .cse0 .cse1) (and .cse0 .cse1 (<= (+ main_~cp~0 2) main_~urilen~0)))) [2018-11-10 03:30:58,024 INFO L421 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,025 INFO L421 ceAbstractionStarter]: At program point L31-1(line 31) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,025 INFO L425 ceAbstractionStarter]: For program point L23(lines 11 69) no Hoare annotation was computed. [2018-11-10 03:30:58,025 INFO L425 ceAbstractionStarter]: For program point L40(lines 30 66) no Hoare annotation was computed. [2018-11-10 03:30:58,025 INFO L421 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,025 INFO L421 ceAbstractionStarter]: At program point L57-1(line 57) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,025 INFO L421 ceAbstractionStarter]: At program point L49(line 49) the Hoare annotation is: (and (<= 1 main_~cp~0) (= main_~c~0 0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,025 INFO L421 ceAbstractionStarter]: At program point L49-1(line 49) the Hoare annotation is: (and (<= 1 main_~cp~0) (= main_~c~0 0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,025 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 38) no Hoare annotation was computed. [2018-11-10 03:30:58,026 INFO L421 ceAbstractionStarter]: At program point L33-2(lines 32 38) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,026 INFO L421 ceAbstractionStarter]: At program point L33-3(lines 33 38) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)) [2018-11-10 03:30:58,026 INFO L421 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,026 INFO L421 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,028 INFO L421 ceAbstractionStarter]: At program point L42-1(line 42) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,028 INFO L428 ceAbstractionStarter]: At program point L67(lines 11 69) the Hoare annotation is: true [2018-11-10 03:30:58,028 INFO L425 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-10 03:30:58,028 INFO L421 ceAbstractionStarter]: At program point L59(line 59) the Hoare annotation is: (and (<= (+ main_~c~0 1) main_~tokenlen~0) (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= 1 main_~c~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point L51(lines 51 63) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L421 ceAbstractionStarter]: At program point L51-2(lines 50 63) the Hoare annotation is: (let ((.cse0 (and (<= 1 main_~cp~0) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 0 main_~scheme~0)))) (or (and (= main_~c~0 0) .cse0) (and .cse0 (<= 1 main_~c~0)))) [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point L43(lines 30 66) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L421 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,029 INFO L421 ceAbstractionStarter]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~cp~0) (<= 0 main_~scheme~0) (<= (+ main_~cp~0 2) main_~urilen~0)) [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 03:30:58,029 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 03:30:58,030 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 03:30:58,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:30:58 BoogieIcfgContainer [2018-11-10 03:30:58,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:30:58,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:30:58,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:30:58,043 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:30:58,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:30:55" (3/4) ... [2018-11-10 03:30:58,046 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 03:30:58,051 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 03:30:58,052 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 03:30:58,052 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 03:30:58,056 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-10 03:30:58,056 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 03:30:58,056 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 03:30:58,101 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3017d878-713a-4455-96d8-e67c92fdf495/bin-2019/uautomizer/witness.graphml [2018-11-10 03:30:58,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:30:58,102 INFO L168 Benchmark]: Toolchain (without parser) took 2638.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 41.1 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,104 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:30:58,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,104 INFO L168 Benchmark]: Boogie Preprocessor took 21.40 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,104 INFO L168 Benchmark]: RCFGBuilder took 299.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,105 INFO L168 Benchmark]: TraceAbstraction took 2094.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,105 INFO L168 Benchmark]: Witness Printer took 59.49 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: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-10 03:30:58,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.40 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 299.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2094.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.49 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: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (c == 0 && (1 <= cp && cp + 1 <= urilen) && 0 <= scheme) || (((1 <= cp && cp + 1 <= urilen) && 0 <= scheme) && 1 <= c) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (1 <= cp && cp + 1 <= urilen) && 0 <= scheme - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 6 OverallIterations, 14 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 342 SDtfs, 121 SDslu, 1098 SDs, 0 SdLazy, 876 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 104 NumberOfFragments, 376 HoareAnnotationTreeSize, 76 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 26 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 565 ConstructedInterpolants, 0 QuantifiedInterpolants, 58105 SizeOfPredicates, 10 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1377/1472 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...