./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_1-1.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_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_1-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 4e01e17e388e5f82fac906dfd87d9bb3456f878f ............................................................................................................................................................................................................................................................................................................................................................... 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_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_1-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 4e01e17e388e5f82fac906dfd87d9bb3456f878f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:25:14,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:14,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:14,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:14,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:14,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:14,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:14,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:14,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:14,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:14,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:14,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:14,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:14,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:14,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:14,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:14,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:14,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:14,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:14,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:14,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:14,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:14,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:14,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:14,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:14,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:14,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:14,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:14,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:14,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:14,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:14,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:14,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:14,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:14,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:14,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:14,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:14,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:14,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:14,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:14,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:14,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:14,954 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:14,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:14,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:14,956 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:14,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:14,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:14,958 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:14,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:14,958 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:14,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:14,960 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:14,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:14,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:14,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:14,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:14,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:14,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:14,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:14,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:14,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:14,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:14,961 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:14,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:14,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:14,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:14,962 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_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 -> 4e01e17e388e5f82fac906dfd87d9bb3456f878f [2019-10-22 11:25:14,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:15,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:15,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:15,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:15,012 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:15,013 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/phases_1-1.c [2019-10-22 11:25:15,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/f7a88f89b/47f12a153fec487bb36ec669719484ac/FLAG1bf5615ab [2019-10-22 11:25:15,441 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:15,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/sv-benchmarks/c/loop-acceleration/phases_1-1.c [2019-10-22 11:25:15,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/f7a88f89b/47f12a153fec487bb36ec669719484ac/FLAG1bf5615ab [2019-10-22 11:25:15,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/f7a88f89b/47f12a153fec487bb36ec669719484ac [2019-10-22 11:25:15,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:15,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:15,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:15,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:15,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:15,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:15" (1/1) ... [2019-10-22 11:25:15,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc8eb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:15, skipping insertion in model container [2019-10-22 11:25:15,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:15" (1/1) ... [2019-10-22 11:25:15,885 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:15,897 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:16,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:16,031 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:16,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:16,116 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:16,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16 WrapperNode [2019-10-22 11:25:16,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:16,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:16,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:16,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:16,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:16,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:16,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:16,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:16,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... [2019-10-22 11:25:16,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:16,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:16,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:16,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:16,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:16,343 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:16,344 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:25:16,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:16 BoogieIcfgContainer [2019-10-22 11:25:16,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:16,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:16,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:16,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:16,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:15" (1/3) ... [2019-10-22 11:25:16,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5280c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:16, skipping insertion in model container [2019-10-22 11:25:16,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:16" (2/3) ... [2019-10-22 11:25:16,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5280c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:16, skipping insertion in model container [2019-10-22 11:25:16,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:16" (3/3) ... [2019-10-22 11:25:16,353 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2019-10-22 11:25:16,364 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:16,371 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:16,380 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:16,400 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:16,400 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:16,400 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:16,400 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:16,400 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:16,400 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:16,401 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:16,401 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:25:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:16,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:16,418 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:16,419 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-10-22 11:25:16,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:16,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768278923] [2019-10-22 11:25:16,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:16,512 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 11:25:16,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768278923] [2019-10-22 11:25:16,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:16,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:16,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465285385] [2019-10-22 11:25:16,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:16,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:16,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:16,530 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2019-10-22 11:25:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:16,542 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-10-22 11:25:16,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:16,543 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:16,552 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:25:16,552 INFO L226 Difference]: Without dead ends: 7 [2019-10-22 11:25:16,555 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 11:25:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-10-22 11:25:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 11:25:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 11:25:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-10-22 11:25:16,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2019-10-22 11:25:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:16,586 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 11:25:16,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-10-22 11:25:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:16,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:16,587 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:16,587 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash 29810958, now seen corresponding path program 1 times [2019-10-22 11:25:16,588 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:16,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488340915] [2019-10-22 11:25:16,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:16,668 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 11:25:16,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488340915] [2019-10-22 11:25:16,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:16,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:16,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646254331] [2019-10-22 11:25:16,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:16,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:16,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:16,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:16,671 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 3 states. [2019-10-22 11:25:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:16,692 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2019-10-22 11:25:16,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:16,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:25:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:16,693 INFO L225 Difference]: With dead ends: 15 [2019-10-22 11:25:16,693 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:25:16,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 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 11:25:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:25:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:25:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:25:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 11:25:16,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-10-22 11:25:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:16,697 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 11:25:16,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-10-22 11:25:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:25:16,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:16,697 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:16,698 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1366097711, now seen corresponding path program 1 times [2019-10-22 11:25:16,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:16,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611380641] [2019-10-22 11:25:16,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:16,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:16,832 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 11:25:16,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611380641] [2019-10-22 11:25:16,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382608144] [2019-10-22 11:25:16,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:16,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:16,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:16,916 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 11:25:16,917 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:16,940 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 11:25:16,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [443238653] [2019-10-22 11:25:16,946 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 8 [2019-10-22 11:25:16,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:16,984 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:17,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:17,241 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 11:25:17,246 INFO L168 Benchmark]: Toolchain (without parser) took 1377.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:17,246 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:17,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:17,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.74 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 11:25:17,248 INFO L168 Benchmark]: Boogie Preprocessor took 18.52 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 11:25:17,248 INFO L168 Benchmark]: RCFGBuilder took 180.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:17,249 INFO L168 Benchmark]: TraceAbstraction took 897.85 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:17,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 247.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.74 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 18.52 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 180.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 897.85 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:19,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:19,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:19,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:19,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:19,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:19,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:19,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:19,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:19,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:19,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:19,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:19,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:19,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:19,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:19,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:19,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:19,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:19,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:19,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:19,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:19,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:19,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:19,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:19,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:19,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:19,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:19,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:19,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:19,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:19,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:19,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:19,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:19,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:19,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:19,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:19,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:19,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:19,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:19,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:19,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:19,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:19,493 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:19,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:19,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:19,494 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:19,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:19,494 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:19,494 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:19,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:19,495 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:19,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:19,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:19,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:19,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:19,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:19,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:19,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:19,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:19,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:19,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:19,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:19,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:19,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:19,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:19,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:19,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:19,500 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:19,500 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:19,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:19,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:19,500 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_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 -> 4e01e17e388e5f82fac906dfd87d9bb3456f878f [2019-10-22 11:25:19,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:19,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:19,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:19,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:19,549 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:19,550 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/phases_1-1.c [2019-10-22 11:25:19,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/151985b02/dce67026698e4d039bf366c6f5945015/FLAG002931cbe [2019-10-22 11:25:19,968 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:19,968 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/sv-benchmarks/c/loop-acceleration/phases_1-1.c [2019-10-22 11:25:19,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/151985b02/dce67026698e4d039bf366c6f5945015/FLAG002931cbe [2019-10-22 11:25:20,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/data/151985b02/dce67026698e4d039bf366c6f5945015 [2019-10-22 11:25:20,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:20,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:20,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:20,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:20,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:20,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a89f467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20, skipping insertion in model container [2019-10-22 11:25:20,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,367 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:20,384 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:20,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:20,537 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:20,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:20,567 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:20,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20 WrapperNode [2019-10-22 11:25:20,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:20,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:20,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:20,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:20,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:20,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:20,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:20,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:20,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... [2019-10-22 11:25:20,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:20,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:20,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:20,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:20,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:20,857 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:20,857 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:25:20,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:20 BoogieIcfgContainer [2019-10-22 11:25:20,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:20,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:20,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:20,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:20,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:20" (1/3) ... [2019-10-22 11:25:20,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:20, skipping insertion in model container [2019-10-22 11:25:20,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:20" (2/3) ... [2019-10-22 11:25:20,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:20, skipping insertion in model container [2019-10-22 11:25:20,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:20" (3/3) ... [2019-10-22 11:25:20,865 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2019-10-22 11:25:20,874 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:20,879 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:20,889 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:20,907 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:20,907 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:20,907 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:20,907 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:20,908 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:20,908 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:20,908 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:20,908 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:25:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:20,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:20,921 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:20,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:20,927 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-10-22 11:25:20,935 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:20,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [704733115] [2019-10-22 11:25:20,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:20,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:20,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:20,990 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 11:25:20,991 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:20,994 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 11:25:20,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [704733115] [2019-10-22 11:25:20,995 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:20,995 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:20,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163340975] [2019-10-22 11:25:20,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:20,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:21,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:21,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:21,013 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2019-10-22 11:25:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:21,026 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-10-22 11:25:21,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:21,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:21,034 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:25:21,035 INFO L226 Difference]: Without dead ends: 7 [2019-10-22 11:25:21,037 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 11:25:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-10-22 11:25:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 11:25:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 11:25:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-10-22 11:25:21,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2019-10-22 11:25:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:21,079 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 11:25:21,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-10-22 11:25:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:21,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:21,080 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:21,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:21,281 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:21,281 INFO L82 PathProgramCache]: Analyzing trace with hash 29810958, now seen corresponding path program 1 times [2019-10-22 11:25:21,282 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:21,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1564730411] [2019-10-22 11:25:21,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:21,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:21,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:21,324 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 11:25:21,324 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:21,332 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 11:25:21,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1564730411] [2019-10-22 11:25:21,333 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:21,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:25:21,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289948962] [2019-10-22 11:25:21,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:21,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:21,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:21,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:21,335 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2019-10-22 11:25:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:21,377 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2019-10-22 11:25:21,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:21,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 11:25:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:21,378 INFO L225 Difference]: With dead ends: 16 [2019-10-22 11:25:21,379 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:25:21,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 11:25:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:25:21,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:25:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:25:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:25:21,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-10-22 11:25:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:21,382 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:25:21,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:25:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:25:21,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:21,383 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:21,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:21,584 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:21,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1492282070, now seen corresponding path program 1 times [2019-10-22 11:25:21,585 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:21,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1268538338] [2019-10-22 11:25:21,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:21,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:25:21,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:21,638 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:21,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268538338] [2019-10-22 11:25:21,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269334248] [2019-10-22 11:25:21,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:21,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:21,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:21,694 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:21,750 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:21,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 4] total 7 [2019-10-22 11:25:21,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850240583] [2019-10-22 11:25:21,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:21,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:21,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:21,751 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 8 states. [2019-10-22 11:25:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:21,860 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-10-22 11:25:21,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:25:21,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-10-22 11:25:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:21,862 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:25:21,862 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:25:21,863 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:25:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 11:25:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:25:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 11:25:21,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2019-10-22 11:25:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:21,867 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 11:25:21,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 11:25:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:25:21,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:21,868 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:22,269 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 11:25:22,269 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -368533665, now seen corresponding path program 2 times [2019-10-22 11:25:22,270 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:22,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [95696909] [2019-10-22 11:25:22,270 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:22,304 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:22,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:22,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:25:22,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:22,397 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:25:22,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95696909] [2019-10-22 11:25:22,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060944138] [2019-10-22 11:25:22,512 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:22,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:22,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:22,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 11:25:22,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:22,575 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:25:22,692 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:22,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 8, 6] total 13 [2019-10-22 11:25:22,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784970744] [2019-10-22 11:25:22,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 11:25:22,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:22,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 11:25:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:25:22,694 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 14 states. [2019-10-22 11:25:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:22,917 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-10-22 11:25:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:25:22,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2019-10-22 11:25:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:22,918 INFO L225 Difference]: With dead ends: 39 [2019-10-22 11:25:22,918 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 11:25:22,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 11:25:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-10-22 11:25:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 11:25:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-22 11:25:22,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2019-10-22 11:25:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:22,927 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-22 11:25:22,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 11:25:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-22 11:25:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:22,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:22,928 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:23,329 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 11:25:23,329 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:23,330 INFO L82 PathProgramCache]: Analyzing trace with hash 598615906, now seen corresponding path program 3 times [2019-10-22 11:25:23,330 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:23,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [623928259] [2019-10-22 11:25:23,332 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:23,369 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 11:25:23,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:23,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:23,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 11:25:23,397 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 11:25:23,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [623928259] [2019-10-22 11:25:23,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101883730] [2019-10-22 11:25:23,507 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/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 11:25:23,538 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 11:25:23,538 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:25:23,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:23,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 11:25:23,554 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 11:25:23,562 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:23,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 4, 7] total 9 [2019-10-22 11:25:23,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106194254] [2019-10-22 11:25:23,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:25:23,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:25:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:25:23,563 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 9 states. [2019-10-22 11:25:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:23,682 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-10-22 11:25:23,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:25:23,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-10-22 11:25:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:23,683 INFO L225 Difference]: With dead ends: 39 [2019-10-22 11:25:23,683 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:23,684 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:25:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:23,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-22 11:25:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:23,685 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:23,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:25:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:23,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:24,086 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 11:25:24,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 19) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:25:24,286 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 18) no Hoare annotation was computed. [2019-10-22 11:25:24,287 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 13 19) the Hoare annotation is: (or (= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32)) (bvult (bvadd ULTIMATE.start_main_~x~0 (_ bv4294967295 32)) (_ bv65520 32))) [2019-10-22 11:25:24,287 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:25:24,287 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 1 22) the Hoare annotation is: true [2019-10-22 11:25:24,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:24 BoogieIcfgContainer [2019-10-22 11:25:24,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:24,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:24,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:24,298 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:24,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:20" (3/4) ... [2019-10-22 11:25:24,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:24,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:25:24,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:25:24,348 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1d2b3974-0af3-4c77-a0fd-51c635bb4c66/bin/utaipan/witness.graphml [2019-10-22 11:25:24,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:24,352 INFO L168 Benchmark]: Toolchain (without parser) took 4000.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.7 MB in the beginning and 922.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 174.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:24,352 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:24,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.74 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:24,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.04 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:24,354 INFO L168 Benchmark]: Boogie Preprocessor took 72.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:24,354 INFO L168 Benchmark]: RCFGBuilder took 178.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:24,355 INFO L168 Benchmark]: TraceAbstraction took 3438.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.8 MB in the end (delta: 195.5 MB). Peak memory consumption was 195.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:24,360 INFO L168 Benchmark]: Witness Printer took 52.23 ms. Allocated memory is still 1.2 GB. Free memory is still 922.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:24,362 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.74 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 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 38.04 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3438.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.8 MB in the end (delta: 195.5 MB). Peak memory consumption was 195.5 MB. Max. memory is 11.5 GB. * Witness Printer took 52.23 ms. Allocated memory is still 1.2 GB. Free memory is still 922.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * 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: 13]: Loop Invariant Derived loop invariant: ~bvurem32(x, 2bv32) == 0bv32 || ~bvult32(~bvadd64(x, 4294967295bv32), 65520bv32) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 24 SDtfs, 28 SDslu, 21 SDs, 0 SdLazy, 206 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 19 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 92 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 7284 SizeOfPredicates, 9 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 170/260 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...