./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/array-1.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_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 1933a74e6216ebab1567a755608ab53b0dd0aaf9 .................................................................................................................................................................................................................................................................................................................................................................................................. 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_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 1933a74e6216ebab1567a755608ab53b0dd0aaf9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:24:48,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:48,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:48,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:48,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:48,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:48,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:48,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:48,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:48,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:48,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:48,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:48,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:48,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:48,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:48,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:48,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:48,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:48,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:48,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:48,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:48,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:48,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:48,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:48,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:48,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:48,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:48,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:48,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:48,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:48,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:48,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:48,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:48,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:48,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:48,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:48,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:48,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:48,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:48,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:48,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:48,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:48,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:48,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:48,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:48,139 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:48,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:48,139 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:48,140 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:48,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:48,141 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:48,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:48,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:48,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:48,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:48,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:48,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:48,145 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:48,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:48,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:48,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:48,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:48,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:48,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:48,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:48,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:48,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:48,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:48,147 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:48,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:48,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:48,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:48,148 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_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 -> 1933a74e6216ebab1567a755608ab53b0dd0aaf9 [2019-10-22 11:24:48,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:48,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:48,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:48,190 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:48,191 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:48,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/../../sv-benchmarks/c/loops/array-1.c [2019-10-22 11:24:48,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/394f7dfd3/800501fdad2f40169054737d814dd206/FLAG84641db1d [2019-10-22 11:24:48,601 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:48,601 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/sv-benchmarks/c/loops/array-1.c [2019-10-22 11:24:48,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/394f7dfd3/800501fdad2f40169054737d814dd206/FLAG84641db1d [2019-10-22 11:24:49,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/394f7dfd3/800501fdad2f40169054737d814dd206 [2019-10-22 11:24:49,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:49,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:49,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:49,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:49,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:49,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b59223a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49, skipping insertion in model container [2019-10-22 11:24:49,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,029 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:49,043 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:49,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:49,227 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:49,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:49,315 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:49,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49 WrapperNode [2019-10-22 11:24:49,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:49,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:49,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:49,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:49,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:49,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:49,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:49,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:49,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:49,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:49,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:49,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:49,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:24:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:49,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:24:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:49,616 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:49,616 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:24:49,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:49 BoogieIcfgContainer [2019-10-22 11:24:49,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:49,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:49,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:49,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:49" (1/3) ... [2019-10-22 11:24:49,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2b573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:49, skipping insertion in model container [2019-10-22 11:24:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (2/3) ... [2019-10-22 11:24:49,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2b573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:49, skipping insertion in model container [2019-10-22 11:24:49,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:49" (3/3) ... [2019-10-22 11:24:49,624 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2019-10-22 11:24:49,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:49,639 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:49,648 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:49,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:49,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:49,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:49,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:49,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:49,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:49,668 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:49,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-10-22 11:24:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:49,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:49,686 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:49,688 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:49,693 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2019-10-22 11:24:49,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:49,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43847383] [2019-10-22 11:24:49,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:49,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:49,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:49,810 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 11:24:49,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43847383] [2019-10-22 11:24:49,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:49,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:49,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780575875] [2019-10-22 11:24:49,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:49,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:49,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:49,828 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-10-22 11:24:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:49,843 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-10-22 11:24:49,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:49,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:24:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:49,853 INFO L225 Difference]: With dead ends: 21 [2019-10-22 11:24:49,853 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:24:49,856 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:24:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:24:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:24:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 11:24:49,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-10-22 11:24:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:49,884 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 11:24:49,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-10-22 11:24:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:49,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:49,885 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:49,885 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2019-10-22 11:24:49,886 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:49,886 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384659931] [2019-10-22 11:24:49,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:49,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:49,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:49,974 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 11:24:49,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384659931] [2019-10-22 11:24:49,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:49,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:49,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166169535] [2019-10-22 11:24:49,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:49,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:49,977 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-10-22 11:24:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:49,998 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-10-22 11:24:49,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:49,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:24:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:49,999 INFO L225 Difference]: With dead ends: 16 [2019-10-22 11:24:49,999 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:24:50,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:24:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 11:24:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:24:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:24:50,003 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-10-22 11:24:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:50,003 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:24:50,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:24:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:50,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:50,004 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:50,004 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2019-10-22 11:24:50,004 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:50,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431505448] [2019-10-22 11:24:50,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:50,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:50,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:50,312 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 27 [2019-10-22 11:24:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:50,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431505448] [2019-10-22 11:24:50,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257632605] [2019-10-22 11:24:50,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:50,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:24:50,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:50,635 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-22 11:24:50,635 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:50,647 INFO L567 ElimStorePlain]: treesize reduction 5, result has 82.1 percent of original size [2019-10-22 11:24:50,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2019-10-22 11:24:50,663 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:50,668 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:50,669 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:50,669 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2019-10-22 11:24:50,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:50,821 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:50,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:50,961 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2019-10-22 11:24:50,985 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2019-10-22 11:24:50,985 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:51,004 INFO L567 ElimStorePlain]: treesize reduction 6, result has 79.3 percent of original size [2019-10-22 11:24:51,005 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:51,048 INFO L567 ElimStorePlain]: treesize reduction 64, result has 47.1 percent of original size [2019-10-22 11:24:51,058 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2019-10-22 11:24:51,066 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-22 11:24:51,066 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:51,078 INFO L567 ElimStorePlain]: treesize reduction 10, result has 58.3 percent of original size [2019-10-22 11:24:51,079 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:51,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:51,090 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-10-22 11:24:51,090 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:130, output treesize:38 [2019-10-22 11:24:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:51,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [80598376] [2019-10-22 11:24:51,130 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 10 [2019-10-22 11:24:51,167 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:24:51,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:24:51,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:51,464 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 11:24:51,468 INFO L168 Benchmark]: Toolchain (without parser) took 2452.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.5 MB in the beginning and 980.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 120.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:51,468 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:51,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:51,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.61 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 11:24:51,470 INFO L168 Benchmark]: Boogie Preprocessor took 30.56 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 11:24:51,470 INFO L168 Benchmark]: RCFGBuilder took 231.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:51,471 INFO L168 Benchmark]: TraceAbstraction took 1848.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 144.5 MB). Peak memory consumption was 144.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:51,473 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.61 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 30.56 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 231.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1848.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 144.5 MB). Peak memory consumption was 144.5 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 11:24:53,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:53,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:53,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:53,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:53,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:53,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:53,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:53,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:53,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:53,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:53,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:53,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:53,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:53,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:53,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:53,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:53,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:53,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:53,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:53,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:53,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:53,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:53,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:53,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:53,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:53,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:53,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:53,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:53,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:53,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:53,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:53,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:53,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:53,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:53,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:53,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:53,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:53,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:53,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:53,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:53,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:53,500 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:53,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:53,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:53,501 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:53,501 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:53,501 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:53,501 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:53,501 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:53,501 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:53,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:53,502 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:53,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:53,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:53,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:53,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:53,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:53,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:53,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:53,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:53,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:53,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:53,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:53,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:53,510 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:53,510 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:53,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:53,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:53,511 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_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 -> 1933a74e6216ebab1567a755608ab53b0dd0aaf9 [2019-10-22 11:24:53,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:53,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:53,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:53,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:53,557 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:53,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/../../sv-benchmarks/c/loops/array-1.c [2019-10-22 11:24:53,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/0db48b241/d64f4bb42ae9428a94e2efb9ff6e0489/FLAG726ff3986 [2019-10-22 11:24:53,994 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:53,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/sv-benchmarks/c/loops/array-1.c [2019-10-22 11:24:54,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/0db48b241/d64f4bb42ae9428a94e2efb9ff6e0489/FLAG726ff3986 [2019-10-22 11:24:54,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/data/0db48b241/d64f4bb42ae9428a94e2efb9ff6e0489 [2019-10-22 11:24:54,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:54,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:54,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:54,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:54,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:54,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf3f2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54, skipping insertion in model container [2019-10-22 11:24:54,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,037 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:54,051 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:54,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:54,201 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:54,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:54,242 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54 WrapperNode [2019-10-22 11:24:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:54,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:54,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:54,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:54,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:54,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:54,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:54,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:54,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... [2019-10-22 11:24:54,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:54,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:54,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:54,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:54,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:24:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:24:54,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:54,553 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:24:54,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:54 BoogieIcfgContainer [2019-10-22 11:24:54,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:54,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:54,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:54,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:54,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:54" (1/3) ... [2019-10-22 11:24:54,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e29c97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:54, skipping insertion in model container [2019-10-22 11:24:54,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:54" (2/3) ... [2019-10-22 11:24:54,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e29c97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:54, skipping insertion in model container [2019-10-22 11:24:54,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:54" (3/3) ... [2019-10-22 11:24:54,561 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2019-10-22 11:24:54,569 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:54,575 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:54,584 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:54,602 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:54,602 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:54,602 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:54,602 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:54,602 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:54,602 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:54,603 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:54,603 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-10-22 11:24:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:54,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,617 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2019-10-22 11:24:54,628 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:54,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [847885577] [2019-10-22 11:24:54,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:54,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:54,704 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 11:24:54,705 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:54,707 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 11:24:54,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847885577] [2019-10-22 11:24:54,709 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:54,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995842215] [2019-10-22 11:24:54,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:54,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:54,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:54,727 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-10-22 11:24:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,741 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-10-22 11:24:54,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:54,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:24:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,751 INFO L225 Difference]: With dead ends: 21 [2019-10-22 11:24:54,751 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:24:54,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:24:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:24:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:24:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 11:24:54,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-10-22 11:24:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,781 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 11:24:54,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-10-22 11:24:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:54,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,781 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:54,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:54,982 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:54,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,982 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2019-10-22 11:24:54,983 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:54,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [798171300] [2019-10-22 11:24:54,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,059 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 11:24:55,060 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,078 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 11:24:55,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798171300] [2019-10-22 11:24:55,078 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:24:55,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103242795] [2019-10-22 11:24:55,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:55,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:55,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:55,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:55,081 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2019-10-22 11:24:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,106 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-10-22 11:24:55,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:55,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 11:24:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,108 INFO L225 Difference]: With dead ends: 16 [2019-10-22 11:24:55,108 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:24:55,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 11:24:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:24:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 11:24:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:24:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:24:55,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-10-22 11:24:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,112 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:24:55,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:24:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:55,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,113 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:55,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,314 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2019-10-22 11:24:55,314 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:55,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1307158604] [2019-10-22 11:24:55,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,431 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-22 11:24:55,431 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:55,443 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,443 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-10-22 11:24:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,552 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-22 11:24:55,571 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-22 11:24:55,573 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:55,603 INFO L567 ElimStorePlain]: treesize reduction 13, result has 45.8 percent of original size [2019-10-22 11:24:55,604 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:55,614 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:55,616 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,616 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:7 [2019-10-22 11:24:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1307158604] [2019-10-22 11:24:55,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946499331] [2019-10-22 11:24:55,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/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 11:24:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,715 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-22 11:24:55,715 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:55,735 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,736 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-10-22 11:24:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,776 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,786 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-22 11:24:55,789 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-22 11:24:55,790 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:55,806 INFO L567 ElimStorePlain]: treesize reduction 13, result has 45.8 percent of original size [2019-10-22 11:24:55,807 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:55,812 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:55,815 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:55,815 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:7 [2019-10-22 11:24:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,817 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:55,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 6] total 10 [2019-10-22 11:24:55,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490124191] [2019-10-22 11:24:55,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:24:55,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:24:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:55,819 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 10 states. [2019-10-22 11:24:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,893 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-10-22 11:24:55,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:55,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2019-10-22 11:24:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,895 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:24:55,895 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:24:55,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:24:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:24:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-10-22 11:24:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:24:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-10-22 11:24:55,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-10-22 11:24:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,899 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-10-22 11:24:55,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:24:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-10-22 11:24:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:55,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,900 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:56,301 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 11:24:56,301 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash -275361512, now seen corresponding path program 1 times [2019-10-22 11:24:56,302 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:56,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1259797694] [2019-10-22 11:24:56,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:56,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:24:56,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:56,395 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-22 11:24:56,396 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,404 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:56,404 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2019-10-22 11:24:56,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:56,448 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:56,502 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-22 11:24:56,508 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-22 11:24:56,509 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:56,528 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:56,529 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:56,566 INFO L567 ElimStorePlain]: treesize reduction 13, result has 51.9 percent of original size [2019-10-22 11:24:56,568 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,568 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:18, output treesize:7 [2019-10-22 11:24:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:56,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259797694] [2019-10-22 11:24:56,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640496577] [2019-10-22 11:24:56,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:56,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:24:56,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:56,629 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-22 11:24:56,630 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,641 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:56,642 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,642 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:18 [2019-10-22 11:24:56,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:56,720 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:56,741 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-22 11:24:56,749 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-22 11:24:56,750 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:56,771 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:56,772 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:56,815 INFO L567 ElimStorePlain]: treesize reduction 13, result has 51.9 percent of original size [2019-10-22 11:24:56,818 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:56,819 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:18, output treesize:7 [2019-10-22 11:24:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:56,820 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:56,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 6] total 12 [2019-10-22 11:24:56,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041670074] [2019-10-22 11:24:56,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 11:24:56,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:56,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 11:24:56,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:24:56,822 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 12 states. [2019-10-22 11:24:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:57,000 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-22 11:24:57,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:24:57,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 9 [2019-10-22 11:24:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:57,001 INFO L225 Difference]: With dead ends: 19 [2019-10-22 11:24:57,001 INFO L226 Difference]: Without dead ends: 15 [2019-10-22 11:24:57,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:24:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-22 11:24:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-10-22 11:24:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:24:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-10-22 11:24:57,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-10-22 11:24:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:57,005 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-10-22 11:24:57,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 11:24:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-10-22 11:24:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 11:24:57,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:57,006 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:57,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:57,407 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash 951667218, now seen corresponding path program 2 times [2019-10-22 11:24:57,408 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:57,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [220682521] [2019-10-22 11:24:57,409 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:57,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:24:57,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:24:57,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:24:57,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:57,500 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:57,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [220682521] [2019-10-22 11:24:57,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522079362] [2019-10-22 11:24:57,536 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:57,570 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:24:57,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:24:57,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:24:57,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:57,586 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:57,589 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:57,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2019-10-22 11:24:57,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846207642] [2019-10-22 11:24:57,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:57,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:57,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:57,591 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2019-10-22 11:24:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:57,611 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-10-22 11:24:57,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:57,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-22 11:24:57,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:57,613 INFO L225 Difference]: With dead ends: 13 [2019-10-22 11:24:57,613 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:57,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:57,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-22 11:24:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:57,615 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:57,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:57,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:58,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:58,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:58,166 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-10-22 11:24:58,169 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 24) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) ULTIMATE.start_main_~SIZE~0)) (.cse2 (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)))) (or (and .cse0 (= (_ bv1 32) ULTIMATE.start_main_~j~0) (let ((.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|) |ULTIMATE.start_main_~#array~0.offset|))) (or (and (not (bvsle .cse1 ULTIMATE.start_main_~menor~0)) .cse2) (and (= ULTIMATE.start_main_~menor~0 .cse1) .cse2)))) (and (= (_ bv0 32) ULTIMATE.start_main_~j~0) .cse0 .cse2))) [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:24:58,170 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:58,171 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:58,171 INFO L446 ceAbstractionStarter]: At program point L28(lines 11 29) the Hoare annotation is: true [2019-10-22 11:24:58,171 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 23) no Hoare annotation was computed. [2019-10-22 11:24:58,171 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:24:58,171 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-10-22 11:24:58,178 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,183 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,183 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:58 BoogieIcfgContainer [2019-10-22 11:24:58,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:58,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:58,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:58,187 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:58,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:54" (3/4) ... [2019-10-22 11:24:58,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:58,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-10-22 11:24:58,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:24:58,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 11:24:58,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_61118794-6ca0-4a05-bee9-8ac5c22b506e/bin/utaipan/witness.graphml [2019-10-22 11:24:58,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:58,246 INFO L168 Benchmark]: Toolchain (without parser) took 4225.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 946.9 MB in the beginning and 868.4 MB in the end (delta: 78.6 MB). Peak memory consumption was 189.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,246 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:58,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 936.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,248 INFO L168 Benchmark]: Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,248 INFO L168 Benchmark]: RCFGBuilder took 204.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,248 INFO L168 Benchmark]: TraceAbstraction took 3632.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 875.2 MB in the end (delta: 204.6 MB). Peak memory consumption was 204.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,249 INFO L168 Benchmark]: Witness Printer took 58.41 ms. Allocated memory is still 1.1 GB. Free memory was 875.2 MB in the beginning and 868.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 936.2 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 82.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 204.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3632.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 875.2 MB in the end (delta: 204.6 MB). Peak memory consumption was 204.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.41 ms. Allocated memory is still 1.1 GB. Free memory was 875.2 MB in the beginning and 868.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 19]: Loop Invariant [2019-10-22 11:24:58,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:24:58,258 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((1bv32 == SIZE && 1bv32 == j) && ((!~bvsle32(unknown-#memory_int-unknown[array][array], menor) && array == 0bv32) || (menor == unknown-#memory_int-unknown[array][array] && array == 0bv32))) || ((0bv32 == j && 1bv32 == SIZE) && array == 0bv32) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 35 SDtfs, 20 SDslu, 51 SDs, 0 SdLazy, 99 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 44 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 128 ConstructedInterpolants, 2 QuantifiedInterpolants, 5012 SizeOfPredicates, 52 NumberOfNonLiveVariables, 206 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 16/28 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...