./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.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_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 91d2600fad1210650d8ad3da481cdcc11b280095 ................................................................................................................................................................................................................................................................................................................................................................... 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_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 91d2600fad1210650d8ad3da481cdcc11b280095 ............................................................................................................................................................................................................................................................................................................................................................................................. 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 11:24:13,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:13,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:13,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:13,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:13,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:13,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:13,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:13,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:13,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:13,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:13,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:13,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:13,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:13,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:13,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:13,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:13,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:13,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:13,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:13,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:13,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:13,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:13,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:13,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:13,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:13,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:13,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:13,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:13,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:13,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:13,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:13,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:13,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:13,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:13,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:13,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:13,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:13,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:13,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:13,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:13,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:13,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:13,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:13,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:13,177 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:13,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:13,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:13,179 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:13,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:13,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:13,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:13,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:13,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:13,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:13,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:13,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:13,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:13,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:13,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:13,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:13,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:13,183 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:13,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:13,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:13,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:13,183 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_7363f771-465c-45d4-adb3-0e913a207e46/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 -> 91d2600fad1210650d8ad3da481cdcc11b280095 [2019-10-22 11:24:13,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:13,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:13,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:13,222 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:13,223 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:13,223 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2019-10-22 11:24:13,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/bea7ce111/5011138038dd4f15b214160973e61cd7/FLAG866c57594 [2019-10-22 11:24:13,677 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:13,678 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/sv-benchmarks/c/recursive/Addition01-2.c [2019-10-22 11:24:13,684 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/bea7ce111/5011138038dd4f15b214160973e61cd7/FLAG866c57594 [2019-10-22 11:24:13,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/bea7ce111/5011138038dd4f15b214160973e61cd7 [2019-10-22 11:24:13,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:13,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:13,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:13,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:13,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:13,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:13" (1/1) ... [2019-10-22 11:24:13,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24da03c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:13, skipping insertion in model container [2019-10-22 11:24:13,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:13" (1/1) ... [2019-10-22 11:24:13,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:13,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:13,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:13,921 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:14,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:14,028 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:14,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14 WrapperNode [2019-10-22 11:24:14,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:14,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:14,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:14,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:14,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:14,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:14,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:14,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:14,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... [2019-10-22 11:24:14,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:14,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:14,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:14,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:14,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-10-22 11:24:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-10-22 11:24:14,354 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:14,355 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:24:14,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:14 BoogieIcfgContainer [2019-10-22 11:24:14,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:14,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:14,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:14,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:14,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:13" (1/3) ... [2019-10-22 11:24:14,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c8242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:14, skipping insertion in model container [2019-10-22 11:24:14,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:14" (2/3) ... [2019-10-22 11:24:14,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163c8242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:14, skipping insertion in model container [2019-10-22 11:24:14,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:14" (3/3) ... [2019-10-22 11:24:14,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2019-10-22 11:24:14,374 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:14,381 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:14,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:14,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:14,417 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:14,417 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:14,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:14,418 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:14,418 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:14,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:14,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-22 11:24:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:24:14,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:14,443 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:14,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2068195676, now seen corresponding path program 1 times [2019-10-22 11:24:14,460 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:14,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522615011] [2019-10-22 11:24:14,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:14,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:14,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:14,750 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 11:24:14,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522615011] [2019-10-22 11:24:14,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:14,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:24:14,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460784558] [2019-10-22 11:24:14,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:14,762 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:14,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:14,778 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2019-10-22 11:24:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:14,947 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-22 11:24:14,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:14,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 11:24:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:14,967 INFO L225 Difference]: With dead ends: 33 [2019-10-22 11:24:14,968 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:24:14,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:24:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:24:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:24:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-10-22 11:24:15,060 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-10-22 11:24:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:15,061 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-10-22 11:24:15,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-10-22 11:24:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:24:15,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:15,063 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:15,063 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 800728349, now seen corresponding path program 1 times [2019-10-22 11:24:15,064 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:15,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16304471] [2019-10-22 11:24:15,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:15,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:15,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:15,129 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 11:24:15,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16304471] [2019-10-22 11:24:15,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:15,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:15,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003227700] [2019-10-22 11:24:15,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:15,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:15,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:15,135 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 4 states. [2019-10-22 11:24:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:15,180 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-10-22 11:24:15,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:15,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 11:24:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:15,182 INFO L225 Difference]: With dead ends: 30 [2019-10-22 11:24:15,182 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 11:24:15,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 11:24:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 11:24:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-10-22 11:24:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:24:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-22 11:24:15,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-10-22 11:24:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:15,195 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-22 11:24:15,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-22 11:24:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:24:15,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:15,196 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:15,196 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1352688745, now seen corresponding path program 1 times [2019-10-22 11:24:15,196 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:15,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369390410] [2019-10-22 11:24:15,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:15,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:15,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:15,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369390410] [2019-10-22 11:24:15,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400094125] [2019-10-22 11:24:15,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:15,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-22 11:24:15,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:15,736 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:15,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:16,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:16,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [793316340] [2019-10-22 11:24:16,120 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-22 11:24:16,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:24:16,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:24:16,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:16,443 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 11:24:16,449 INFO L168 Benchmark]: Toolchain (without parser) took 2743.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 947.7 MB in the beginning and 964.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 121.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:16,450 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:16,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:16,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:16,452 INFO L168 Benchmark]: Boogie Preprocessor took 22.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:16,453 INFO L168 Benchmark]: RCFGBuilder took 268.05 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:16,453 INFO L168 Benchmark]: TraceAbstraction took 2089.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 150.4 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:16,459 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 268.05 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2089.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 150.4 MB). Peak memory consumption was 150.4 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 11:24:18,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:18,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:18,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:18,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:18,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:18,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:18,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:18,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:18,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:18,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:18,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:18,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:18,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:18,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:18,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:18,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:18,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:18,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:18,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:18,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:18,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:18,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:18,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:18,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:18,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:18,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:18,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:18,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:18,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:18,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:18,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:18,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:18,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:18,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:18,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:18,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:18,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:18,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:18,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:18,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:18,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:18,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:18,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:18,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:18,609 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:18,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:18,609 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:18,609 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:18,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:18,610 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:18,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:18,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:18,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:18,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:18,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:18,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:18,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:18,612 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:18,612 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:18,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:18,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:18,613 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:18,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:18,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:18,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:18,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:18,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:18,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:18,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:18,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:18,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:18,615 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:18,615 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:18,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:18,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:18,616 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_7363f771-465c-45d4-adb3-0e913a207e46/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 -> 91d2600fad1210650d8ad3da481cdcc11b280095 [2019-10-22 11:24:18,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:18,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:18,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:18,671 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:18,671 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:18,672 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2019-10-22 11:24:18,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/7cd1584ad/8556aecfee914264a46fbce9b5335cf9/FLAGdab14548d [2019-10-22 11:24:19,131 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:19,134 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/sv-benchmarks/c/recursive/Addition01-2.c [2019-10-22 11:24:19,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/7cd1584ad/8556aecfee914264a46fbce9b5335cf9/FLAGdab14548d [2019-10-22 11:24:19,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/data/7cd1584ad/8556aecfee914264a46fbce9b5335cf9 [2019-10-22 11:24:19,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:19,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:19,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:19,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:19,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:19,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dd8dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19, skipping insertion in model container [2019-10-22 11:24:19,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,551 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:19,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:19,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:19,750 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:19,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:19,783 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:19,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19 WrapperNode [2019-10-22 11:24:19,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:19,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:19,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:19,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:19,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:19,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:19,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:19,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:19,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... [2019-10-22 11:24:19,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:19,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:19,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:19,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:19,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-10-22 11:24:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-10-22 11:24:20,103 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:20,103 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:24:20,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:20 BoogieIcfgContainer [2019-10-22 11:24:20,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:20,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:20,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:20,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:20,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:19" (1/3) ... [2019-10-22 11:24:20,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b73cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:20, skipping insertion in model container [2019-10-22 11:24:20,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:19" (2/3) ... [2019-10-22 11:24:20,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b73cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:20, skipping insertion in model container [2019-10-22 11:24:20,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:20" (3/3) ... [2019-10-22 11:24:20,113 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2019-10-22 11:24:20,125 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:20,133 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:20,144 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:20,168 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:20,168 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:20,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:20,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:20,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:20,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:20,169 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:20,169 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-22 11:24:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:24:20,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:20,201 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:20,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2068195676, now seen corresponding path program 1 times [2019-10-22 11:24:20,226 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:20,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1525373935] [2019-10-22 11:24:20,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:20,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:24:20,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:20,425 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 11:24:20,425 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:20,601 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 11:24:20,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1525373935] [2019-10-22 11:24:20,603 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:20,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-10-22 11:24:20,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463046311] [2019-10-22 11:24:20,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:24:20,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:24:20,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:20,622 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 10 states. [2019-10-22 11:24:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:20,898 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-22 11:24:20,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:24:20,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-10-22 11:24:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:20,911 INFO L225 Difference]: With dead ends: 36 [2019-10-22 11:24:20,912 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:24:20,916 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:24:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:24:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:24:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:24:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-10-22 11:24:20,959 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-10-22 11:24:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:20,960 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-10-22 11:24:20,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:24:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-10-22 11:24:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:24:20,962 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:20,962 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:21,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:21,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 800728349, now seen corresponding path program 1 times [2019-10-22 11:24:21,164 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:21,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [168170785] [2019-10-22 11:24:21,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:21,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:21,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:21,269 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 11:24:21,269 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:21,382 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 11:24:21,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [168170785] [2019-10-22 11:24:21,382 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:21,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-22 11:24:21,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994304641] [2019-10-22 11:24:21,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:24:21,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:21,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:24:21,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:24:21,390 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 9 states. [2019-10-22 11:24:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:21,539 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-10-22 11:24:21,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:21,540 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-10-22 11:24:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:21,541 INFO L225 Difference]: With dead ends: 31 [2019-10-22 11:24:21,541 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:24:21,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:24:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 11:24:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:24:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 11:24:21,549 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-22 11:24:21,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:21,549 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 11:24:21,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:24:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 11:24:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:24:21,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:21,554 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:21,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:21,755 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1352688745, now seen corresponding path program 1 times [2019-10-22 11:24:21,756 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:21,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [564628920] [2019-10-22 11:24:21,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:21,815 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 11:24:21,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:24:21,972 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:22,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:22,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [564628920] [2019-10-22 11:24:22,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448573459] [2019-10-22 11:24:22,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/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 11:24:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:22,538 WARN L254 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-22 11:24:22,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:24:22,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:23,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:23,064 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:23,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10, 9] total 18 [2019-10-22 11:24:23,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38310822] [2019-10-22 11:24:23,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 11:24:23,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:23,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 11:24:23,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-22 11:24:23,066 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2019-10-22 11:24:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:23,638 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-10-22 11:24:23,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:24:23,638 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2019-10-22 11:24:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:23,639 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:24:23,639 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:23,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2019-10-22 11:24:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:23,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-22 11:24:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:23,641 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:23,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 11:24:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:23,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:24,042 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 11:24:24,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:24,156 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:24,156 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:24,156 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:24,156 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-10-22 11:24:24,156 INFO L446 ceAbstractionStarter]: At program point L26(lines 26 45) the Hoare annotation is: true [2019-10-22 11:24:24,157 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-10-22 11:24:24,157 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-10-22 11:24:24,158 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2019-10-22 11:24:24,158 INFO L439 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (not (bvsgt ULTIMATE.start_main_~n~0 (_ bv1073741823 32))) (not (bvsgt ULTIMATE.start_main_~m~0 (_ bv1073741823 32))) (not (bvslt ULTIMATE.start_main_~m~0 (_ bv0 32))) (not (bvslt ULTIMATE.start_main_~n~0 (_ bv0 32)))) [2019-10-22 11:24:24,158 INFO L443 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2019-10-22 11:24:24,158 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 38) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L443 ceAbstractionStarter]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L439 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (not (bvsgt |addition_#in~n| (_ bv0 32))) (not (= (_ bv0 32) |addition_#in~n|)) (= addition_~m |addition_#in~m|) (= addition_~n |addition_#in~n|)) [2019-10-22 11:24:24,159 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L439 ceAbstractionStarter]: At program point L18(line 18) the Hoare annotation is: (and (not (= addition_~n (_ bv0 32))) (= addition_~m |addition_#in~m|) (= addition_~n |addition_#in~n|)) [2019-10-22 11:24:24,159 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-10-22 11:24:24,159 INFO L446 ceAbstractionStarter]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2019-10-22 11:24:24,160 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-10-22 11:24:24,160 INFO L443 ceAbstractionStarter]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2019-10-22 11:24:24,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:24 BoogieIcfgContainer [2019-10-22 11:24:24,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:24,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:24,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:24,169 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:24,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:20" (3/4) ... [2019-10-22 11:24:24,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:24,181 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2019-10-22 11:24:24,185 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:24:24,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:24:24,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7363f771-465c-45d4-adb3-0e913a207e46/bin/utaipan/witness.graphml [2019-10-22 11:24:24,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:24,249 INFO L168 Benchmark]: Toolchain (without parser) took 4717.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 952.3 MB in the beginning and 871.9 MB in the end (delta: 80.4 MB). Peak memory consumption was 235.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,250 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 11:24:24,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.01 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:24,252 INFO L168 Benchmark]: Boogie Preprocessor took 74.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -209.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,255 INFO L168 Benchmark]: RCFGBuilder took 212.12 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,257 INFO L168 Benchmark]: TraceAbstraction took 4062.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.3 MB in the end (delta: 248.4 MB). Peak memory consumption was 248.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,259 INFO L168 Benchmark]: Witness Printer took 78.35 ms. Allocated memory is still 1.2 GB. Free memory was 878.3 MB in the beginning and 871.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:24,261 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 252.01 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.23 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -209.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 212.12 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4062.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.3 MB in the end (delta: 248.4 MB). Peak memory consumption was 248.4 MB. Max. memory is 11.5 GB. * Witness Printer took 78.35 ms. Allocated memory is still 1.2 GB. Free memory was 878.3 MB in the beginning and 871.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 41 SDtfs, 72 SDslu, 133 SDs, 0 SdLazy, 266 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 9218 SizeOfPredicates, 24 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/16 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...