./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-examples/standard_sentinel_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_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/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 b4fbc36a28ccee76a98a185e0c5cc58738af3c30 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:16:37,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:16:37,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:16:37,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:16:37,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:16:37,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:16:37,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:16:37,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:16:37,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:16:37,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:16:37,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:16:37,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:16:37,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:16:37,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:16:37,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:16:37,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:16:37,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:16:37,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:16:37,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:16:37,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:16:37,916 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:16:37,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:16:37,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:16:37,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:16:37,918 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:16:37,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:16:37,920 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:16:37,920 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:16:37,921 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:16:37,921 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:16:37,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:16:37,922 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:16:37,922 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:16:37,922 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:16:37,923 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:16:37,923 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:16:37,924 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 12:16:37,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:16:37,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:16:37,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:16:37,934 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:16:37,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:16:37,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:16:37,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:16:37,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:16:37,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:16:37,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:16:37,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:16:37,938 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:16:37,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:16:37,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:16:37,938 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_0422724b-67a9-47f6-97a3-8e7e91c0693f/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 -> b4fbc36a28ccee76a98a185e0c5cc58738af3c30 [2018-11-10 12:16:37,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:16:37,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:16:37,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:16:37,973 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:16:37,974 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:16:37,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-10 12:16:38,019 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/data/114c849d2/94206d62ffb848769165669572b8741a/FLAG708e30aad [2018-11-10 12:16:38,337 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:16:38,337 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-10 12:16:38,342 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/data/114c849d2/94206d62ffb848769165669572b8741a/FLAG708e30aad [2018-11-10 12:16:38,352 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/data/114c849d2/94206d62ffb848769165669572b8741a [2018-11-10 12:16:38,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:16:38,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:16:38,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:16:38,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:16:38,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:16:38,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61258a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38, skipping insertion in model container [2018-11-10 12:16:38,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:16:38,377 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:16:38,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:16:38,497 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:16:38,508 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:16:38,518 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:16:38,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38 WrapperNode [2018-11-10 12:16:38,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:16:38,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:16:38,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:16:38,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:16:38,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... [2018-11-10 12:16:38,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:16:38,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:16:38,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:16:38,541 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:16:38,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/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 12:16:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:16:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:16:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 12:16:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:16:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:16:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 12:16:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 12:16:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 12:16:38,716 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:16:38,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:16:38 BoogieIcfgContainer [2018-11-10 12:16:38,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:16:38,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:16:38,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:16:38,720 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:16:38,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:16:38" (1/3) ... [2018-11-10 12:16:38,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de47bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:16:38, skipping insertion in model container [2018-11-10 12:16:38,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:16:38" (2/3) ... [2018-11-10 12:16:38,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de47bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:16:38, skipping insertion in model container [2018-11-10 12:16:38,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:16:38" (3/3) ... [2018-11-10 12:16:38,723 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call_true-termination.i [2018-11-10 12:16:38,728 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:16:38,732 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:16:38,740 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:16:38,757 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:16:38,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:16:38,757 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:16:38,757 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:16:38,757 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:16:38,757 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:16:38,757 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:16:38,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:16:38,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:16:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-10 12:16:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:16:38,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:16:38,777 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:16:38,779 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:16:38,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:16:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1588599728, now seen corresponding path program 1 times [2018-11-10 12:16:38,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:16:38,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:16:38,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:38,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:16:38,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:16:38,870 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 12:16:38,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:16:38,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:16:38,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:16:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:16:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:16:38,883 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-11-10 12:16:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:16:38,900 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-11-10 12:16:38,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:16:38,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-10 12:16:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:16:38,906 INFO L225 Difference]: With dead ends: 41 [2018-11-10 12:16:38,906 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 12:16:38,908 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 12:16:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 12:16:38,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 12:16:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 12:16:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 12:16:38,929 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-10 12:16:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:16:38,930 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 12:16:38,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:16:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 12:16:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 12:16:38,930 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:16:38,931 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:16:38,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:16:38,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:16:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1604641738, now seen corresponding path program 1 times [2018-11-10 12:16:38,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:16:38,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:16:38,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:38,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:16:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:16:39,019 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 12:16:39,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:16:39,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 12:16:39,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 12:16:39,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 12:16:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:16:39,021 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-11-10 12:16:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:16:39,067 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-10 12:16:39,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 12:16:39,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-10 12:16:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:16:39,068 INFO L225 Difference]: With dead ends: 26 [2018-11-10 12:16:39,068 INFO L226 Difference]: Without dead ends: 21 [2018-11-10 12:16:39,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-10 12:16:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-10 12:16:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-10 12:16:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 12:16:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-10 12:16:39,071 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-10 12:16:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:16:39,072 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-10 12:16:39,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 12:16:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-10 12:16:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 12:16:39,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:16:39,072 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:16:39,073 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:16:39,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:16:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash -525752084, now seen corresponding path program 1 times [2018-11-10 12:16:39,073 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:16:39,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:16:39,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:39,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:16:39,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:16:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:16:39,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:16:39,341 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/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 12:16:39,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:16:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:16:39,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:16:39,402 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-10 12:16:39,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-10 12:16:39,405 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:16:39,406 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:16:39,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:16:39,411 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-11-10 12:16:39,459 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 23 treesize of output 19 [2018-11-10 12:16:39,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2018-11-10 12:16:39,469 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-10 12:16:39,472 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 12:16:39,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-10 12:16:39,479 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-11-10 12:16:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:16:39,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:16:39,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2018-11-10 12:16:39,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 12:16:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 12:16:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-10 12:16:39,553 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 16 states. [2018-11-10 12:16:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:16:39,674 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-10 12:16:39,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 12:16:39,675 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2018-11-10 12:16:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:16:39,675 INFO L225 Difference]: With dead ends: 29 [2018-11-10 12:16:39,675 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 12:16:39,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2018-11-10 12:16:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 12:16:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-10 12:16:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 12:16:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-10 12:16:39,679 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-11-10 12:16:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:16:39,680 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-10 12:16:39,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 12:16:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-10 12:16:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 12:16:39,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:16:39,681 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:16:39,681 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:16:39,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:16:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -356370294, now seen corresponding path program 2 times [2018-11-10 12:16:39,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:16:39,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:16:39,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:39,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:16:39,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:16:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:16:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:16:39,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:16:39,988 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/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 12:16:40,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:16:40,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:16:40,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:16:40,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:16:40,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-10 12:16:40,026 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-10 12:16:40,026 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:16:40,027 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:16:40,031 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:16:40,031 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-10 12:16:40,076 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 27 treesize of output 21 [2018-11-10 12:16:40,087 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 33 [2018-11-10 12:16:40,088 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-10 12:16:40,100 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 12:16:40,129 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 12:16:40,129 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:48 [2018-11-10 12:16:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:16:40,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:16:40,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 17 [2018-11-10 12:16:40,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 12:16:40,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 12:16:40,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-10 12:16:40,204 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 17 states. [2018-11-10 12:16:40,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:16:40,408 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-10 12:16:40,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 12:16:40,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-11-10 12:16:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:16:40,409 INFO L225 Difference]: With dead ends: 28 [2018-11-10 12:16:40,409 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 12:16:40,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2018-11-10 12:16:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 12:16:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 12:16:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 12:16:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 12:16:40,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-10 12:16:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:16:40,410 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 12:16:40,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 12:16:40,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 12:16:40,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 12:16:40,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 12:16:40,487 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 12:16:40,487 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 12:16:40,487 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:16:40,487 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:16:40,487 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 12:16:40,487 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 12:16:40,494 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 12:16:40,494 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 17) no Hoare annotation was computed. [2018-11-10 12:16:40,494 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 17) no Hoare annotation was computed. [2018-11-10 12:16:40,495 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-10 12:16:40,495 INFO L425 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-11-10 12:16:40,495 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-10 12:16:40,495 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-10 12:16:40,495 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse3 (+ (* 4 main_~pos~0) |main_~#a~0.offset|))) (let ((.cse0 (<= 0 main_~pos~0)) (.cse1 (= (select (select |#memory_int| |main_~#a~0.base|) .cse3) main_~marker~0)) (.cse2 (= |main_~#a~0.offset| 0))) (or (and .cse0 .cse1 (= main_~i~0 0) .cse2) (and (not (= .cse3 0)) .cse0 (< main_~i~0 (+ main_~pos~0 1)) .cse1 .cse2)))) [2018-11-10 12:16:40,495 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (let ((.cse1 (<= 0 main_~pos~0))) (or (let ((.cse0 (+ (* 4 main_~pos~0) |main_~#a~0.offset|))) (and (not (= .cse0 0)) .cse1 (< main_~i~0 (+ main_~pos~0 1)) (= (select (select |#memory_int| |main_~#a~0.base|) .cse0) main_~marker~0) (= |main_~#a~0.offset| 0))) (and .cse1 (= main_~i~0 0)))) [2018-11-10 12:16:40,495 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 12:16:40,496 INFO L425 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2018-11-10 12:16:40,496 INFO L425 ceAbstractionStarter]: For program point L5-2(line 5) no Hoare annotation was computed. [2018-11-10 12:16:40,497 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 17) the Hoare annotation is: true [2018-11-10 12:16:40,497 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 15) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point L8-1(lines 8 15) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-11-10 12:16:40,498 INFO L425 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-11-10 12:16:40,504 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,505 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,508 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,508 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:16:40 BoogieIcfgContainer [2018-11-10 12:16:40,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:16:40,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:16:40,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:16:40,511 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:16:40,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:16:38" (3/4) ... [2018-11-10 12:16:40,513 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 12:16:40,518 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 12:16:40,518 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 12:16:40,518 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 12:16:40,521 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-10 12:16:40,521 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-10 12:16:40,521 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 12:16:40,550 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0422724b-67a9-47f6-97a3-8e7e91c0693f/bin-2019/uautomizer/witness.graphml [2018-11-10 12:16:40,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:16:40,550 INFO L168 Benchmark]: Toolchain (without parser) took 2196.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 960.2 MB in the beginning and 1.2 GB in the end (delta: -236.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:16:40,551 INFO L168 Benchmark]: CDTParser took 0.14 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 12:16:40,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:16:40,552 INFO L168 Benchmark]: Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:16:40,552 INFO L168 Benchmark]: RCFGBuilder took 175.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:16:40,553 INFO L168 Benchmark]: TraceAbstraction took 1792.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.2 MB). Peak memory consumption was 316.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:16:40,553 INFO L168 Benchmark]: Witness Printer took 39.51 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: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2018-11-10 12:16:40,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 163.99 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1792.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.2 MB). Peak memory consumption was 316.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.51 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: 2.6 MB). Peak memory consumption was 2.6 MB. 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 - 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: 3]: 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: 11]: Loop Invariant [2018-11-10 12:16:40,559 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,559 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,560 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-10 12:16:40,560 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((0 <= pos && unknown-#memory_int-unknown[a][4 * pos + a] == marker) && i == 0) && a == 0) || ((((!(4 * pos + a == 0) && 0 <= pos) && i < pos + 1) && unknown-#memory_int-unknown[a][4 * pos + a] == marker) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 97 SDslu, 189 SDs, 0 SdLazy, 180 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 97 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 196 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 19416 SizeOfPredicates, 12 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...