./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_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan --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 Taipan --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 02:28:45,349 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:28:45,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:28:45,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:28:45,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:28:45,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:28:45,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:28:45,359 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:28:45,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:28:45,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:28:45,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:28:45,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:28:45,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:28:45,363 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:28:45,363 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:28:45,363 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:28:45,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:28:45,365 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:28:45,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:28:45,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:28:45,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:28:45,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:28:45,370 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:28:45,370 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:28:45,370 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:28:45,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:28:45,371 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:28:45,371 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:28:45,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:28:45,374 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:28:45,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:28:45,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:28:45,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:28:45,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:28:45,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:28:45,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:28:45,376 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 02:28:45,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:28:45,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:28:45,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:28:45,383 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:28:45,383 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 02:28:45,384 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 02:28:45,384 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 02:28:45,385 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:28:45,385 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:28:45,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:28:45,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:28:45,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:28:45,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:28:45,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 02:28:45,388 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan 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 -> Taipan 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 02:28:45,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:28:45,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:28:45,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:28:45,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:28:45,425 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:28:45,426 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 02:28:45,467 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/data/d78426f12/3ac2058217e84a48b04dec10d0e96000/FLAG423d9d2db [2018-11-23 02:28:45,881 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:28:45,881 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 02:28:45,885 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/data/d78426f12/3ac2058217e84a48b04dec10d0e96000/FLAG423d9d2db [2018-11-23 02:28:45,895 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/data/d78426f12/3ac2058217e84a48b04dec10d0e96000 [2018-11-23 02:28:45,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:28:45,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:28:45,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:28:45,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:28:45,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:28:45,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:45" (1/1) ... [2018-11-23 02:28:45,903 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 02:28:45, skipping insertion in model container [2018-11-23 02:28:45,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:45" (1/1) ... [2018-11-23 02:28:45,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:28:45,921 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:28:46,029 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:28:46,031 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:28:46,043 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:28:46,054 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:28:46,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46 WrapperNode [2018-11-23 02:28:46,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:28:46,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:28:46,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:28:46,055 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:28:46,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:28:46,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:28:46,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:28:46,068 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:28:46,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... [2018-11-23 02:28:46,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:28:46,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:28:46,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:28:46,118 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:28:46,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:28:46,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:28:46,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:28:46,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:28:46,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 02:28:46,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 02:28:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 02:28:46,259 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:28:46,259 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:28:46,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:46 BoogieIcfgContainer [2018-11-23 02:28:46,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:28:46,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:28:46,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:28:46,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:28:46,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:28:45" (1/3) ... [2018-11-23 02:28:46,262 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 02:28:46, skipping insertion in model container [2018-11-23 02:28:46,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:46" (2/3) ... [2018-11-23 02:28:46,263 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 02:28:46, skipping insertion in model container [2018-11-23 02:28:46,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:46" (3/3) ... [2018-11-23 02:28:46,264 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call_true-termination.i [2018-11-23 02:28:46,272 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:28:46,278 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:28:46,288 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:28:46,306 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:28:46,306 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:28:46,306 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:28:46,306 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:28:46,306 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:28:46,306 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:28:46,307 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:28:46,307 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:28:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-23 02:28:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 02:28:46,320 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:28:46,320 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:28:46,321 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:28:46,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash -202248900, now seen corresponding path program 1 times [2018-11-23 02:28:46,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:28:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:28:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,363 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:28:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:28:46,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:28:46,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:28:46,418 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 02:28:46,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 02:28:46,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 02:28:46,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:28:46,431 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-23 02:28:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:28:46,443 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-23 02:28:46,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 02:28:46,444 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-23 02:28:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:28:46,450 INFO L225 Difference]: With dead ends: 33 [2018-11-23 02:28:46,450 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 02:28:46,452 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:28:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 02:28:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 02:28:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 02:28:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-23 02:28:46,474 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-23 02:28:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:28:46,474 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-23 02:28:46,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 02:28:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 02:28:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 02:28:46,475 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:28:46,475 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:28:46,475 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:28:46,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2095323521, now seen corresponding path program 1 times [2018-11-23 02:28:46,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:28:46,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:28:46,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,477 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:28:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:28:46,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:28:46,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 02:28:46,544 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 02:28:46,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:28:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:28:46,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:28:46,546 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-23 02:28:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:28:46,583 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-23 02:28:46,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:28:46,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 02:28:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:28:46,584 INFO L225 Difference]: With dead ends: 21 [2018-11-23 02:28:46,584 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 02:28:46,585 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 02:28:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 02:28:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-23 02:28:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 02:28:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-23 02:28:46,588 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-23 02:28:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:28:46,588 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-23 02:28:46,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:28:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-23 02:28:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 02:28:46,589 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:28:46,589 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:28:46,589 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:28:46,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:46,589 INFO L82 PathProgramCache]: Analyzing trace with hash 171646118, now seen corresponding path program 1 times [2018-11-23 02:28:46,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:28:46,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:28:46,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:46,591 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:28:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:46,837 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 02:28:46,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:46,837 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:28:46,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-23 02:28:46,840 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [13], [16], [18], [28], [31], [33], [39], [40], [41], [43] [2018-11-23 02:28:46,862 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 02:28:46,863 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 02:28:47,004 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 02:28:47,005 INFO L272 AbstractInterpreter]: Visited 14 different actions 35 times. Merged at 3 different actions 9 times. Never widened. Performed 192 root evaluator evaluations with a maximum evaluation depth of 3. Performed 192 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 18 variables. [2018-11-23 02:28:47,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:47,013 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 02:28:47,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:47,013 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:28:47,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:28:47,022 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 02:28:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:47,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:28:47,085 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 02:28:47,088 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:28:47,088 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,090 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,102 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,102 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-23 02:28:47,120 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 02:28:47,127 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 02:28:47,128 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 02:28:47,130 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:28:47,136 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 02:28:47,136 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-11-23 02:28:47,201 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 02:28:47,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:28:47,280 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 02:28:47,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:28:47,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2018-11-23 02:28:47,304 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:28:47,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 02:28:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 02:28:47,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-23 02:28:47,305 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2018-11-23 02:28:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:28:47,426 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-23 02:28:47,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:28:47,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2018-11-23 02:28:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:28:47,427 INFO L225 Difference]: With dead ends: 23 [2018-11-23 02:28:47,427 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 02:28:47,427 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-23 02:28:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 02:28:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 02:28:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 02:28:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-23 02:28:47,430 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-23 02:28:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:28:47,431 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-23 02:28:47,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 02:28:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-23 02:28:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 02:28:47,431 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:28:47,431 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:28:47,432 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:28:47,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1646400885, now seen corresponding path program 2 times [2018-11-23 02:28:47,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:28:47,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:47,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:28:47,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:47,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:28:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:47,711 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 02:28:47,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:47,712 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:28:47,712 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 02:28:47,712 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 02:28:47,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:47,712 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:28:47,726 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:28:47,726 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 02:28:47,737 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 02:28:47,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:28:47,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:28:47,743 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 02:28:47,745 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:28:47,745 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,746 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,751 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,751 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-23 02:28:47,791 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 02:28:47,801 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 02:28:47,802 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-23 02:28:47,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:28:47,822 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 02:28:47,822 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:48 [2018-11-23 02:28:47,872 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 02:28:47,872 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:28:47,984 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-23 02:28:47,984 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:47,985 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:1 [2018-11-23 02:28:47,987 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 02:28:48,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:28:48,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 21 [2018-11-23 02:28:48,002 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:28:48,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:28:48,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:28:48,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-11-23 02:28:48,002 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 15 states. [2018-11-23 02:28:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:28:48,188 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 02:28:48,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 02:28:48,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2018-11-23 02:28:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:28:48,189 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:28:48,189 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 02:28:48,190 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-23 02:28:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 02:28:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 02:28:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 02:28:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-23 02:28:48,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-11-23 02:28:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:28:48,193 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-23 02:28:48,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:28:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-23 02:28:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:28:48,194 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:28:48,194 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:28:48,194 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:28:48,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:28:48,194 INFO L82 PathProgramCache]: Analyzing trace with hash 471082645, now seen corresponding path program 3 times [2018-11-23 02:28:48,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:28:48,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:48,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:28:48,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:28:48,195 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:28:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:28:48,570 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 02:28:48,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:48,570 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:28:48,570 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 02:28:48,570 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 02:28:48,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:28:48,570 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:28:48,582 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:28:48,582 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 02:28:48,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:28:48,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:28:48,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:28:48,611 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 02:28:48,612 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:28:48,613 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:28:48,614 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:48,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:48,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-23 02:28:48,733 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 43 treesize of output 33 [2018-11-23 02:28:48,737 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:28:48,739 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:28:48,739 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:28:48,746 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 61 [2018-11-23 02:28:48,747 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 02:28:48,765 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:28:48,778 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 02:28:48,778 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:62 [2018-11-23 02:28:48,828 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 02:28:48,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:28:49,037 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-23 02:28:49,038 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 02:28:49,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:28:49,039 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:70, output treesize:1 [2018-11-23 02:28:49,054 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 02:28:49,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:28:49,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2018-11-23 02:28:49,076 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:28:49,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 02:28:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 02:28:49,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 02:28:49,077 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 23 states. [2018-11-23 02:28:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:28:49,318 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-23 02:28:49,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 02:28:49,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2018-11-23 02:28:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:28:49,319 INFO L225 Difference]: With dead ends: 25 [2018-11-23 02:28:49,319 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:28:49,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2018-11-23 02:28:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:28:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:28:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:28:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:28:49,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-23 02:28:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:28:49,321 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:28:49,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 02:28:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:28:49,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:28:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:28:49,410 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:28:49,410 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:28:49,410 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:28:49,410 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 17) the Hoare annotation is: true [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 17) no Hoare annotation was computed. [2018-11-23 02:28:49,410 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 17) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 15) no Hoare annotation was computed. [2018-11-23 02:28:49,411 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 02:28:49,411 INFO L444 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse0 (<= 0 main_~pos~0))) (or (and .cse0 (= main_~i~0 0)) (and (<= main_~i~0 main_~pos~0) (not (= (+ (* 4 main_~pos~0) |main_~#a~0.offset|) 0)) .cse0 (= |main_~#a~0.offset| 0)))) [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L8-1(lines 8 15) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-11-23 02:28:49,411 INFO L448 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-11-23 02:28:49,415 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,416 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,419 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,419 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:28:49 BoogieIcfgContainer [2018-11-23 02:28:49,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:28:49,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:28:49,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:28:49,421 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:28:49,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:46" (3/4) ... [2018-11-23 02:28:49,423 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:28:49,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:28:49,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:28:49,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 02:28:49,429 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 02:28:49,429 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 02:28:49,429 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:28:49,456 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5f22a1d6-4d58-4637-bb22-612f9fcae32b/bin-2019/utaipan/witness.graphml [2018-11-23 02:28:49,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:28:49,457 INFO L168 Benchmark]: Toolchain (without parser) took 3559.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 182.5 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -135.5 MB). Peak memory consumption was 47.0 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,458 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:28:49,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,458 INFO L168 Benchmark]: Boogie Preprocessor took 48.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,459 INFO L168 Benchmark]: RCFGBuilder took 142.40 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,459 INFO L168 Benchmark]: TraceAbstraction took 3160.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,459 INFO L168 Benchmark]: Witness Printer took 35.27 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: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2018-11-23 02:28:49,461 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 155.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 13.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 142.40 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3160.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. * Witness Printer took 35.27 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: 4.8 MB). Peak memory consumption was 4.8 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 [2018-11-23 02:28:49,465 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,465 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,466 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:28:49,466 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, 3.1s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 50 SDslu, 163 SDs, 0 SdLazy, 281 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.7s 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, 0.1s AbstIntTime, 1 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, 312 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 173 ConstructedInterpolants, 2 QuantifiedInterpolants, 32517 SizeOfPredicates, 30 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...