./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_1-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0edc3db25587eb2dcb44164977e2a8fa1ed85700 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:41:34,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:34,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:34,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:34,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:34,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:34,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:34,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:34,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:34,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:34,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:34,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:34,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:34,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:34,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:34,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:34,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:34,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:34,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:34,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:34,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:34,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:34,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:34,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:34,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:34,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:34,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:34,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:34,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:34,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:34,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:34,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:34,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:34,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:34,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:34,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:34,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:34,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:34,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:34,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:34,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:34,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:41:34,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:34,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:34,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:34,869 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:34,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:34,870 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:34,871 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:34,871 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:34,871 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:34,871 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:34,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:34,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:34,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:34,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:34,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:34,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:34,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:34,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:34,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:34,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:34,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:34,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:34,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:34,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:34,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:34,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:34,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:34,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:34,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:34,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:34,877 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:34,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:34,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:34,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:34,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:34,879 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0edc3db25587eb2dcb44164977e2a8fa1ed85700 [2020-11-28 07:41:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:35,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:35,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:35,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:35,205 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:35,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/array_1-2.c [2020-11-28 07:41:35,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/data/c4dba4c69/4fcf82c0dd74484e89c1216129f414e7/FLAG07206dab1 [2020-11-28 07:41:35,774 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:35,774 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/sv-benchmarks/c/loop-acceleration/array_1-2.c [2020-11-28 07:41:35,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/data/c4dba4c69/4fcf82c0dd74484e89c1216129f414e7/FLAG07206dab1 [2020-11-28 07:41:36,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/data/c4dba4c69/4fcf82c0dd74484e89c1216129f414e7 [2020-11-28 07:41:36,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:36,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:36,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:36,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:36,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:36,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bd04a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36, skipping insertion in model container [2020-11-28 07:41:36,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:36,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:36,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:36,367 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:36,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:36,398 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:36,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36 WrapperNode [2020-11-28 07:41:36,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:36,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:36,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:36,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:36,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:36,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:36,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:36,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:36,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... [2020-11-28 07:41:36,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:36,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:36,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:36,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:36,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/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 [2020-11-28 07:41:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:41:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:41:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:41:36,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:36,936 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:41:36,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:36 BoogieIcfgContainer [2020-11-28 07:41:36,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:36,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:36,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:36,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:36,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:36" (1/3) ... [2020-11-28 07:41:36,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9fd12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:36, skipping insertion in model container [2020-11-28 07:41:36,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:36" (2/3) ... [2020-11-28 07:41:36,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9fd12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:36, skipping insertion in model container [2020-11-28 07:41:36,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:36" (3/3) ... [2020-11-28 07:41:36,947 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-11-28 07:41:36,970 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:36,974 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:36,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:41:37,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:37,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:37,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:37,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:37,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:37,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:37,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:37,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-28 07:41:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:41:37,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:37,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:41:37,042 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:37,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:37,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1944713, now seen corresponding path program 1 times [2020-11-28 07:41:37,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:37,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18138847] [2020-11-28 07:41:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:37,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18138847] [2020-11-28 07:41:37,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:37,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:37,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934223915] [2020-11-28 07:41:37,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:37,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:37,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:37,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:37,247 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-28 07:41:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:37,314 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-28 07:41:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:37,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:41:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:37,325 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:41:37,337 INFO L226 Difference]: Without dead ends: 6 [2020-11-28 07:41:37,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-28 07:41:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-28 07:41:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 07:41:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 07:41:37,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-28 07:41:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:37,375 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-28 07:41:37,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 07:41:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:37,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:37,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:37,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:37,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash 60245700, now seen corresponding path program 1 times [2020-11-28 07:41:37,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:37,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243547439] [2020-11-28 07:41:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:37,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243547439] [2020-11-28 07:41:37,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622465651] [2020-11-28 07:41:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/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 [2020-11-28 07:41:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:41:37,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:37,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:37,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2092302617] [2020-11-28 07:41:37,702 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-28 07:41:37,703 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:41:37,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:41:37,717 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:41:37,717 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:41:38,600 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:41:38,786 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-11-28 07:41:38,912 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-11-28 07:41:39,100 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-11-28 07:41:39,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:41:39,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:41:39,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-11-28 07:41:39,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016190635] [2020-11-28 07:41:39,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:41:39,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:39,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:41:39,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:41:39,106 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2020-11-28 07:41:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:39,126 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-28 07:41:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:41:39,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-28 07:41:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:39,128 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:41:39,128 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:41:39,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:41:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:41:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:41:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:41:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:41:39,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:41:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:39,132 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:41:39,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:41:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:41:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:39,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:39,133 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2020-11-28 07:41:39,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:41:39,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:39,342 INFO L82 PathProgramCache]: Analyzing trace with hash -556801207, now seen corresponding path program 2 times [2020-11-28 07:41:39,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:39,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894580220] [2020-11-28 07:41:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:39,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894580220] [2020-11-28 07:41:39,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439725059] [2020-11-28 07:41:39,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:39,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 07:41:39,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:41:39,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:41:39,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 07:41:39,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 07:41:39,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:39,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 10 [2020-11-28 07:41:39,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997109749] [2020-11-28 07:41:39,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:41:39,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:39,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:41:39,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:41:39,724 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-11-28 07:41:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:41,852 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 07:41:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:41,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:41:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:41,853 INFO L225 Difference]: With dead ends: 9 [2020-11-28 07:41:41,853 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:41,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:41:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:41,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 07:41:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:41,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:41,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:41:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:41,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:42,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 07:41:42,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:42,112 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:42,112 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-28 07:41:42,112 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:42,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:41:42,113 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (exists ((v_ULTIMATE.start_main_~i~0_22 Int)) (and (= v_ULTIMATE.start_main_~i~0_22 (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_22 4)))) (< v_ULTIMATE.start_main_~i~0_22 1024) (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_22 1))))) [2020-11-28 07:41:42,113 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-28 07:41:42,113 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-28 07:41:42,122 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,123 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,123 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,123 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:41:42,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,141 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,145 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:41:42,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:42 BoogieIcfgContainer [2020-11-28 07:41:42,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:42,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:42,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:42,152 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:42,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:36" (3/4) ... [2020-11-28 07:41:42,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:42,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:41:42,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:41:42,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:41:42,174 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:42,201 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: i <= 0 || (\exists v_ULTIMATE.start_main_~i~0_22 : int :: (v_ULTIMATE.start_main_~i~0_22 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_22 * 4] && v_ULTIMATE.start_main_~i~0_22 < 1024) && i <= v_ULTIMATE.start_main_~i~0_22 + 1) [2020-11-28 07:41:42,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b806542f-0c6c-4e56-93e3-d9adfff8fcbb/bin/utaipan/witness.graphml [2020-11-28 07:41:42,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:42,228 INFO L168 Benchmark]: Toolchain (without parser) took 6076.96 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 69.0 MB in the beginning and 44.0 MB in the end (delta: 25.0 MB). Peak memory consumption was 59.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,228 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:42,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.96 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 68.7 MB in the beginning and 103.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.27 ms. Allocated memory is still 125.8 MB. Free memory was 103.4 MB in the beginning and 102.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:42,230 INFO L168 Benchmark]: Boogie Preprocessor took 48.53 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.3 MB in the end (delta: 993.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,231 INFO L168 Benchmark]: RCFGBuilder took 433.19 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 86.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,231 INFO L168 Benchmark]: TraceAbstraction took 5211.36 ms. Allocated memory is still 125.8 MB. Free memory was 85.7 MB in the beginning and 46.1 MB in the end (delta: 39.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,232 INFO L168 Benchmark]: Witness Printer took 75.04 ms. Allocated memory is still 125.8 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:42,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.96 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 68.7 MB in the beginning and 103.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.27 ms. Allocated memory is still 125.8 MB. Free memory was 103.4 MB in the beginning and 102.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.53 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.3 MB in the end (delta: 993.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 433.19 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 86.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5211.36 ms. Allocated memory is still 125.8 MB. Free memory was 85.7 MB in the beginning and 46.1 MB in the end (delta: 39.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 75.04 ms. Allocated memory is still 125.8 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2020-11-28 07:41:42,243 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,243 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,243 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,243 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:41:42,244 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,244 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,245 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,245 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_22,QUANTIFIED] [2020-11-28 07:41:42,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i <= 0 || (\exists v_ULTIMATE.start_main_~i~0_22 : int :: (v_ULTIMATE.start_main_~i~0_22 == unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_22 * 4] && v_ULTIMATE.start_main_~i~0_22 < 1024) && i <= v_ULTIMATE.start_main_~i~0_22 + 1) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 30 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 1 QuantifiedInterpolants, 580 SizeOfPredicates, 12 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...