./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 ccfa8861d162225c615acc9ffa4374a5998b45db ............................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 ccfa8861d162225c615acc9ffa4374a5998b45db ....................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:22:12,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:12,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:12,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:12,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:12,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:12,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:12,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:12,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:12,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:12,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:12,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:12,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:12,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:12,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:12,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:12,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:12,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:12,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:12,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:12,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:12,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:12,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:12,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:12,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:12,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:12,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:12,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:12,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:12,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:12,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:12,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:12,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:12,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:12,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:12,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:12,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:12,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:12,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:12,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:12,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:12,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:12,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:12,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:12,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:12,283 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:12,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:12,284 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:12,285 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:12,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:12,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:12,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:12,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:12,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:12,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:12,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:12,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:12,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:12,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:12,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:12,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:12,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:12,288 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:12,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:12,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:12,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:12,289 INFO L138 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_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 -> ccfa8861d162225c615acc9ffa4374a5998b45db [2019-10-22 11:22:12,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:12,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:12,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:12,336 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:12,336 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:12,337 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-10-22 11:22:12,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/35464dbb0/28cefdb0181b4ca89f95f6dc57da2cdc/FLAGa818ece5e [2019-10-22 11:22:12,790 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:12,791 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-10-22 11:22:12,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/35464dbb0/28cefdb0181b4ca89f95f6dc57da2cdc/FLAGa818ece5e [2019-10-22 11:22:12,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/35464dbb0/28cefdb0181b4ca89f95f6dc57da2cdc [2019-10-22 11:22:12,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:12,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:12,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:12,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:12,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:12,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:12" (1/1) ... [2019-10-22 11:22:12,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc7219d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:12, skipping insertion in model container [2019-10-22 11:22:12,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:12" (1/1) ... [2019-10-22 11:22:12,835 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:12,852 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:12,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:12,991 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:13,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:13,078 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:13,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13 WrapperNode [2019-10-22 11:22:13,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:13,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:13,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:13,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:13,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:13,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:13,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:13,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:13,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... [2019-10-22 11:22:13,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:13,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:13,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:13,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:13,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 [2019-10-22 11:22:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:13,323 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:13,323 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:22:13,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:13 BoogieIcfgContainer [2019-10-22 11:22:13,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:13,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:13,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:13,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:13,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:12" (1/3) ... [2019-10-22 11:22:13,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@975576c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:13, skipping insertion in model container [2019-10-22 11:22:13,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:13" (2/3) ... [2019-10-22 11:22:13,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@975576c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:13, skipping insertion in model container [2019-10-22 11:22:13,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:13" (3/3) ... [2019-10-22 11:22:13,332 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv2.c [2019-10-22 11:22:13,340 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:13,348 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:13,357 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:13,375 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:13,375 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:13,375 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:13,375 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:13,375 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:13,375 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:13,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:13,376 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:22:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:22:13,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,392 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:13,394 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1446330702, now seen corresponding path program 1 times [2019-10-22 11:22:13,412 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693203964] [2019-10-22 11:22:13,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:13,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693203964] [2019-10-22 11:22:13,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:13,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102583124] [2019-10-22 11:22:13,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:13,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:13,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:13,511 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 11:22:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,526 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2019-10-22 11:22:13,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:13,527 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 11:22:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,540 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:22:13,540 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:22:13,543 INFO L600 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 [2019-10-22 11:22:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:22:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:22:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:22:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:22:13,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2019-10-22 11:22:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,574 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:22:13,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:22:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:22:13,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,575 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:13,575 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1331814098, now seen corresponding path program 1 times [2019-10-22 11:22:13,575 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945369082] [2019-10-22 11:22:13,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:13,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945369082] [2019-10-22 11:22:13,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:13,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474575919] [2019-10-22 11:22:13,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:13,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:13,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:13,874 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2019-10-22 11:22:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,941 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-10-22 11:22:13,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:13,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:22:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,942 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:22:13,943 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 11:22:13,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 11:22:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2019-10-22 11:22:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:22:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-10-22 11:22:13,947 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-10-22 11:22:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,947 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-10-22 11:22:13,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-10-22 11:22:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:22:13,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,948 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:13,948 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,950 INFO L82 PathProgramCache]: Analyzing trace with hash -66849766, now seen corresponding path program 1 times [2019-10-22 11:22:13,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068959538] [2019-10-22 11:22:13,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:14,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068959538] [2019-10-22 11:22:14,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829399252] [2019-10-22 11:22:14,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:14,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:14,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:14,150 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:14,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1636968123] [2019-10-22 11:22:14,190 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 11 [2019-10-22 11:22:14,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:22:14,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:22:14,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:14,490 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:22:14,494 INFO L168 Benchmark]: Toolchain (without parser) took 1674.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.5 MB in the beginning and 1.0 GB in the end (delta: -87.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,495 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:14,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 947.1 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.18 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,496 INFO L168 Benchmark]: Boogie Preprocessor took 17.12 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,497 INFO L168 Benchmark]: RCFGBuilder took 198.73 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: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,497 INFO L168 Benchmark]: TraceAbstraction took 1166.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.9 MB). Peak memory consumption was 74.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,500 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 947.1 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.18 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.12 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.73 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: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1166.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.9 MB). Peak memory consumption was 74.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:22:16,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:16,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:16,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:16,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:16,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:16,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:16,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:16,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:16,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:16,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:16,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:16,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:16,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:16,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:16,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:16,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:16,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:16,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:16,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:16,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:16,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:16,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:16,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:16,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:16,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:16,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:16,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:16,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:16,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:16,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:16,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:16,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:16,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:16,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:16,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:16,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:16,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:16,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:16,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:16,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:16,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:22:16,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:16,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:16,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:16,609 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:16,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:16,609 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:16,610 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:16,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:16,610 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:16,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:16,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:22:16,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:16,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:16,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:16,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:16,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:16,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:22:16,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:16,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:16,615 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 -> ccfa8861d162225c615acc9ffa4374a5998b45db [2019-10-22 11:22:16,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:16,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:16,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:16,657 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:16,657 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:16,658 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-10-22 11:22:16,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/5a01adc0c/e461eba9aef14e24ba1ddef3809aed05/FLAG329e592a1 [2019-10-22 11:22:17,064 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:17,065 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-10-22 11:22:17,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/5a01adc0c/e461eba9aef14e24ba1ddef3809aed05/FLAG329e592a1 [2019-10-22 11:22:17,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/data/5a01adc0c/e461eba9aef14e24ba1ddef3809aed05 [2019-10-22 11:22:17,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:17,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:17,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:17,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:17,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:17,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b296397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17, skipping insertion in model container [2019-10-22 11:22:17,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,107 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:17,122 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:17,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:17,294 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:17,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:17,328 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:17,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17 WrapperNode [2019-10-22 11:22:17,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:17,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:17,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:17,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:17,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:17,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:17,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:17,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:17,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:17,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:17,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:17,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:17,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/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 [2019-10-22 11:22:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:17,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:17,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:17,699 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:22:17,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:17 BoogieIcfgContainer [2019-10-22 11:22:17,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:17,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:17,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:17,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:17,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:17" (1/3) ... [2019-10-22 11:22:17,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12628901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:17, skipping insertion in model container [2019-10-22 11:22:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17" (2/3) ... [2019-10-22 11:22:17,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12628901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:17, skipping insertion in model container [2019-10-22 11:22:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:17" (3/3) ... [2019-10-22 11:22:17,709 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv2.c [2019-10-22 11:22:17,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:17,728 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:17,740 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:17,767 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:17,767 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:17,767 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:17,767 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:17,768 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:17,768 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:17,768 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:17,768 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:22:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:22:17,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:17,789 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:17,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:17,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1446330702, now seen corresponding path program 1 times [2019-10-22 11:22:17,808 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:17,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [655581246] [2019-10-22 11:22:17,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:17,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:17,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:17,891 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:17,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [655581246] [2019-10-22 11:22:17,898 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:17,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:17,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888366669] [2019-10-22 11:22:17,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:17,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:17,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:17,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:17,921 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 11:22:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:17,942 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2019-10-22 11:22:17,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:17,944 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 11:22:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:17,954 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:22:17,954 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:22:17,958 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:22:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:22:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:22:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:22:17,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2019-10-22 11:22:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:17,994 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:22:17,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:22:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:22:17,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:17,995 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:18,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:18,196 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1331814098, now seen corresponding path program 1 times [2019-10-22 11:22:18,197 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:18,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1756256343] [2019-10-22 11:22:18,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:18,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:22:18,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,276 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1756256343] [2019-10-22 11:22:18,302 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:18,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:22:18,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472066707] [2019-10-22 11:22:18,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:18,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:18,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:18,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:18,305 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-10-22 11:22:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:18,334 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-10-22 11:22:18,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:22:18,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 11:22:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:18,336 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:22:18,336 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 11:22:18,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 11:22:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 11:22:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 11:22:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-10-22 11:22:18,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-10-22 11:22:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:18,342 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-10-22 11:22:18,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-10-22 11:22:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:22:18,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:18,343 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:18,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:18,544 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash -66849766, now seen corresponding path program 1 times [2019-10-22 11:22:18,545 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:18,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1343514480] [2019-10-22 11:22:18,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:18,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:22:18,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,635 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343514480] [2019-10-22 11:22:18,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710272170] [2019-10-22 11:22:18,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:18,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:22:18,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:18,715 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:18,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2019-10-22 11:22:18,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984808382] [2019-10-22 11:22:18,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:18,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:18,718 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-10-22 11:22:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:18,851 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-10-22 11:22:18,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:18,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 11:22:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:18,854 INFO L225 Difference]: With dead ends: 14 [2019-10-22 11:22:18,854 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:22:18,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:22:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:22:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:22:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:22:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:22:18,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-22 11:22:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:18,856 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:22:18,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:22:18,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:22:19,258 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:19,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:22:19,378 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:22:19,379 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 26) the Hoare annotation is: (= (_ bv0 32) (bvsrem ULTIMATE.start_main_~j~0 (_ bv2 32))) [2019-10-22 11:22:19,379 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2019-10-22 11:22:19,379 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 11:22:19,379 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= (bvsrem (bvadd ULTIMATE.start_main_~i~0 (_ bv6 32)) (_ bv2 32)) (_ bv0 32)) (= (_ bv0 32) (bvsrem ULTIMATE.start_main_~j~0 (_ bv2 32)))) [2019-10-22 11:22:19,380 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2019-10-22 11:22:19,380 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-22 11:22:19,380 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-10-22 11:22:19,380 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:22:19,380 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:22:19,381 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:22:19,381 INFO L446 ceAbstractionStarter]: At program point L28(lines 12 29) the Hoare annotation is: true [2019-10-22 11:22:19,381 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-10-22 11:22:19,382 INFO L446 ceAbstractionStarter]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2019-10-22 11:22:19,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:19 BoogieIcfgContainer [2019-10-22 11:22:19,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:19,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:19,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:19,397 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:19,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:17" (3/4) ... [2019-10-22 11:22:19,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:22:19,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:22:19,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:22:19,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_00928cca-306a-4ed7-9311-bc03e634f63d/bin/utaipan/witness.graphml [2019-10-22 11:22:19,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:19,457 INFO L168 Benchmark]: Toolchain (without parser) took 2367.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -103.8 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,457 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:19,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.12 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -213.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,460 INFO L168 Benchmark]: Boogie Preprocessor took 29.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,460 INFO L168 Benchmark]: RCFGBuilder took 238.34 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,461 INFO L168 Benchmark]: TraceAbstraction took 1693.00 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: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,461 INFO L168 Benchmark]: Witness Printer took 59.21 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:19,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.12 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 102.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -213.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 238.34 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1693.00 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: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.21 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 17]: Loop Invariant Derived loop invariant: ~bvsrem32(~bvadd64(i, 6bv32), 2bv32) == 0bv32 && 0bv32 == ~bvsrem32(j, 2bv32) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0bv32 == ~bvsrem32(j, 2bv32) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 29 SDtfs, 4 SDslu, 9 SDs, 0 SdLazy, 20 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 20 HoareAnnotationTreeSize, 4 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1192 SizeOfPredicates, 6 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...