./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/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_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/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-aa41828 [2018-11-23 04:45:28,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:45:28,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:45:28,393 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:45:28,393 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:45:28,394 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:45:28,395 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:45:28,396 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:45:28,397 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:45:28,398 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:45:28,399 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:45:28,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:45:28,400 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:45:28,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:45:28,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:45:28,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:45:28,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:45:28,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:45:28,405 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:45:28,406 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:45:28,407 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:45:28,408 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:45:28,410 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:45:28,410 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:45:28,410 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:45:28,411 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:45:28,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:45:28,412 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:45:28,413 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:45:28,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:45:28,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:45:28,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:45:28,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:45:28,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:45:28,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:45:28,417 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:45:28,417 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 04:45:28,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:45:28,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:45:28,428 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:45:28,428 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:45:28,428 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 04:45:28,429 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:45:28,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:45:28,430 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:45:28,430 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:45:28,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:45:28,431 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:45:28,431 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:45:28,431 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:45:28,431 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:45:28,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:45:28,432 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:45:28,433 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:45:28,433 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:45:28,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:45:28,433 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:45:28,433 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:45:28,433 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:45:28,434 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 04:45:28,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:45:28,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:45:28,434 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_af9d0a7c-89e5-4208-be04-268a2a0400e2/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 [2018-11-23 04:45:28,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:45:28,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:45:28,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:45:28,473 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:45:28,473 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:45:28,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 04:45:28,514 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/data/4e599a726/ac9b3d9320b94d2192448f09fed30cc1/FLAGcfffdac30 [2018-11-23 04:45:28,915 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:45:28,916 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 04:45:28,919 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/data/4e599a726/ac9b3d9320b94d2192448f09fed30cc1/FLAGcfffdac30 [2018-11-23 04:45:28,928 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/data/4e599a726/ac9b3d9320b94d2192448f09fed30cc1 [2018-11-23 04:45:28,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:45:28,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:45:28,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:45:28,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:45:28,935 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:45:28,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:28" (1/1) ... [2018-11-23 04:45:28,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f375ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:28, skipping insertion in model container [2018-11-23 04:45:28,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:28" (1/1) ... [2018-11-23 04:45:28,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:45:28,956 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:45:29,061 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:45:29,064 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:45:29,076 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:45:29,089 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:45:29,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29 WrapperNode [2018-11-23 04:45:29,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:45:29,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:45:29,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:45:29,091 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:45:29,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:45:29,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:45:29,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:45:29,110 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:45:29,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2018-11-23 04:45:29,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:45:29,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:45:29,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:45:29,163 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:45:29,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:45:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 04:45:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:45:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:45:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 04:45:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:45:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:45:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 04:45:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:45:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:45:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 04:45:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 04:45:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 04:45:29,328 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:45:29,329 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 04:45:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:29 BoogieIcfgContainer [2018-11-23 04:45:29,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:45:29,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:45:29,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:45:29,332 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:45:29,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:28" (1/3) ... [2018-11-23 04:45:29,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ced70ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:29, skipping insertion in model container [2018-11-23 04:45:29,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (2/3) ... [2018-11-23 04:45:29,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ced70ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:29, skipping insertion in model container [2018-11-23 04:45:29,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:29" (3/3) ... [2018-11-23 04:45:29,334 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 04:45:29,341 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:45:29,347 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:45:29,361 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:45:29,386 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 04:45:29,387 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:45:29,387 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:45:29,387 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:45:29,387 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:45:29,388 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:45:29,388 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:45:29,388 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:45:29,388 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:45:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-23 04:45:29,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 04:45:29,407 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:29,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:29,410 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:29,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:29,414 INFO L82 PathProgramCache]: Analyzing trace with hash -202248900, now seen corresponding path program 1 times [2018-11-23 04:45:29,415 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:45:29,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:45:29,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:29,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:29,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:45:29,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 04:45:29,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 04:45:29,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 04:45:29,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:45:29,529 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-23 04:45:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:29,541 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-23 04:45:29,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 04:45:29,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-23 04:45:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:29,547 INFO L225 Difference]: With dead ends: 33 [2018-11-23 04:45:29,547 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 04:45:29,550 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:45:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 04:45:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 04:45:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 04:45:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-23 04:45:29,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-23 04:45:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:29,572 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-23 04:45:29,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 04:45:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 04:45:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 04:45:29,572 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:29,572 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:29,573 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:29,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2095323521, now seen corresponding path program 1 times [2018-11-23 04:45:29,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:45:29,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:45:29,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:29,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:29,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:45:29,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 04:45:29,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:45:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:45:29,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:45:29,661 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-23 04:45:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:29,698 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-23 04:45:29,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 04:45:29,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 04:45:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:29,699 INFO L225 Difference]: With dead ends: 21 [2018-11-23 04:45:29,700 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 04:45:29,700 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:45:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 04:45:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-23 04:45:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 04:45:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-23 04:45:29,704 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-23 04:45:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:29,704 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-23 04:45:29,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:45:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-23 04:45:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 04:45:29,704 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:29,704 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:29,704 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:29,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash 171646118, now seen corresponding path program 1 times [2018-11-23 04:45:29,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:45:29,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:45:29,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:29,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:29,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:45:29,922 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:45:29,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:29,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:45:29,988 INFO L478 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 [2018-11-23 04:45:29,991 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 04:45:29,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 04:45:29,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:30,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:30,005 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-23 04:45:30,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2018-11-23 04:45:30,031 INFO L478 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 [2018-11-23 04:45:30,031 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 04:45:30,035 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 04:45:30,041 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. [2018-11-23 04:45:30,042 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-11-23 04:45:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:30,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:45:30,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2018-11-23 04:45:30,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 04:45:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 04:45:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-23 04:45:30,107 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2018-11-23 04:45:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:30,200 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-23 04:45:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 04:45:30,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2018-11-23 04:45:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:30,200 INFO L225 Difference]: With dead ends: 23 [2018-11-23 04:45:30,201 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 04:45:30,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:45:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 04:45:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 04:45:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 04:45:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-23 04:45:30,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-23 04:45:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:30,203 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-23 04:45:30,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 04:45:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-23 04:45:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 04:45:30,204 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:30,204 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:30,204 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:30,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:30,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1646400885, now seen corresponding path program 2 times [2018-11-23 04:45:30,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:45:30,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:45:30,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:30,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:30,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:30,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:45:30,530 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:45:30,540 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 04:45:30,552 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 04:45:30,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:45:30,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:45:30,559 INFO L478 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 [2018-11-23 04:45:30,561 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 04:45:30,562 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 04:45:30,563 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:30,568 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:30,568 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-23 04:45:30,608 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-23 04:45:30,618 INFO L478 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 [2018-11-23 04:45:30,619 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-23 04:45:30,631 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 04:45:30,643 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 04:45:30,643 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:48 [2018-11-23 04:45:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:30,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:45:30,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2018-11-23 04:45:30,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 04:45:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 04:45:30,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:45:30,719 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 15 states. [2018-11-23 04:45:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:30,932 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 04:45:30,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 04:45:30,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2018-11-23 04:45:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:30,933 INFO L225 Difference]: With dead ends: 28 [2018-11-23 04:45:30,933 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 04:45:30,934 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2018-11-23 04:45:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 04:45:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 04:45:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 04:45:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-23 04:45:30,936 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-11-23 04:45:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:30,937 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-23 04:45:30,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 04:45:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-23 04:45:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 04:45:30,937 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:30,937 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:30,937 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:30,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 471082645, now seen corresponding path program 3 times [2018-11-23 04:45:30,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:45:30,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:45:30,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:30,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:45:30,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:31,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:45:31,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:45:31,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 04:45:31,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-23 04:45:31,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:45:31,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:45:31,374 INFO L478 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 [2018-11-23 04:45:31,376 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 04:45:31,376 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 04:45:31,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:31,382 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 04:45:31,382 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-23 04:45:31,503 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2018-11-23 04:45:31,534 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 97 [2018-11-23 04:45:31,535 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-23 04:45:31,552 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 36 xjuncts. [2018-11-23 04:45:31,678 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 04:45:31,700 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 04:45:31,700 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:56, output treesize:120 [2018-11-23 04:45:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:45:31,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:45:31,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 23 [2018-11-23 04:45:31,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 04:45:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 04:45:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2018-11-23 04:45:31,802 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 23 states. [2018-11-23 04:45:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:32,041 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-23 04:45:32,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 04:45:32,041 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2018-11-23 04:45:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:32,041 INFO L225 Difference]: With dead ends: 25 [2018-11-23 04:45:32,042 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 04:45:32,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2018-11-23 04:45:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 04:45:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 04:45:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 04:45:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 04:45:32,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-23 04:45:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:32,043 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 04:45:32,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 04:45:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 04:45:32,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 04:45:32,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 04:45:32,148 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 04:45:32,148 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 04:45:32,148 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:45:32,148 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:45:32,148 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 04:45:32,148 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 04:45:32,148 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 17) the Hoare annotation is: true [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 17) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 17) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 15) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (let ((.cse4 (* 4 main_~pos~0))) (let ((.cse2 (+ .cse4 |main_~#a~0.offset|)) (.cse0 (<= 0 main_~pos~0)) (.cse1 (select |#memory_int| |main_~#a~0.base|)) (.cse3 (= |main_~#a~0.offset| 0))) (or (and .cse0 (= (select .cse1 .cse2) main_~marker~0) (= main_~i~0 0) .cse3) (and (not (= .cse2 0)) .cse0 (= main_~marker~0 (select .cse1 (+ |main_~#a~0.offset| .cse4))) (< main_~i~0 (+ main_~pos~0 1)) .cse3)))) [2018-11-23 04:45:32,149 INFO L444 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse0 (<= 0 main_~pos~0))) (or (and (<= main_~i~0 main_~pos~0) (not (= (+ (* 4 main_~pos~0) |main_~#a~0.offset|) 0)) .cse0 (= |main_~#a~0.offset| 0)) (and .cse0 (= main_~i~0 0)))) [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L8-1(lines 8 15) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-11-23 04:45:32,149 INFO L448 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-11-23 04:45:32,154 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,155 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,160 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,160 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:45:32 BoogieIcfgContainer [2018-11-23 04:45:32,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:45:32,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:45:32,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:45:32,162 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:45:32,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:29" (3/4) ... [2018-11-23 04:45:32,165 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 04:45:32,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 04:45:32,170 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 04:45:32,170 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 04:45:32,172 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 04:45:32,172 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 04:45:32,172 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 04:45:32,199 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_af9d0a7c-89e5-4208-be04-268a2a0400e2/bin-2019/uautomizer/witness.graphml [2018-11-23 04:45:32,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:45:32,199 INFO L168 Benchmark]: Toolchain (without parser) took 3268.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,200 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:45:32,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.84 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,201 INFO L168 Benchmark]: Boogie Preprocessor took 52.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,201 INFO L168 Benchmark]: RCFGBuilder took 166.46 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,202 INFO L168 Benchmark]: TraceAbstraction took 2832.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-11-23 04:45:32,202 INFO L168 Benchmark]: Witness Printer took 36.98 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-23 04:45:32,204 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.84 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 166.46 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2832.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Witness Printer took 36.98 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: 24 B). Peak memory consumption was 24 B. 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 [2018-11-23 04:45:32,208 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,208 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,209 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 04:45:32,209 WARN L1272 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) && marker == unknown-#memory_int-unknown[a][a + 4 * pos]) && i < pos + 1) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 53 SDslu, 153 SDs, 0 SdLazy, 219 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 84 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 348 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 123 ConstructedInterpolants, 1 QuantifiedInterpolants, 24625 SizeOfPredicates, 18 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...