./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.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_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/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 8ebb4762c1ec628ec4a8477bc1d35427dd36abdd ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:37,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:37,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:37,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:37,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:37,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:37,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:37,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:37,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:37,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:37,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:37,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:37,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:37,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:37,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:37,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:37,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:37,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:37,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:37,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:37,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:37,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:37,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:37,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:37,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:37,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:37,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:37,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:37,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:37,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:37,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:37,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:37,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:37,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:37,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:37,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:37,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:37,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:37,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:37,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:37,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:37,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:07:38,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:38,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:38,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:38,033 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:38,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:38,033 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:38,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:07:38,034 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:38,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:38,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:07:38,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:07:38,035 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:38,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:07:38,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:07:38,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:07:38,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:38,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:38,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:38,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:38,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:38,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:07:38,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:38,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:07:38,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:38,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:38,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:07:38,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:38,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:07:38,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:38,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:38,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:38,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:38,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:38,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:38,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:07:38,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:07:38,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:07:38,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:07:38,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:38,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:38,042 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_55983bcc-9d0e-4afd-8f51-b4362d60deae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ebb4762c1ec628ec4a8477bc1d35427dd36abdd [2020-11-22 13:07:38,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:38,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:38,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:38,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:38,338 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:38,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2020-11-22 13:07:38,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/data/32ab3f4d1/707b05319c1a48e182921dbabe1b8794/FLAG69ecfe1ad [2020-11-22 13:07:38,800 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:38,801 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2020-11-22 13:07:38,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/data/32ab3f4d1/707b05319c1a48e182921dbabe1b8794/FLAG69ecfe1ad [2020-11-22 13:07:39,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/data/32ab3f4d1/707b05319c1a48e182921dbabe1b8794 [2020-11-22 13:07:39,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:39,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:39,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:39,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:39,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:39,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4b4c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39, skipping insertion in model container [2020-11-22 13:07:39,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:39,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:39,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:39,429 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:39,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:39,460 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:39,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39 WrapperNode [2020-11-22 13:07:39,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:39,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:39,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:39,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:39,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:39,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:39,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:39,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:39,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... [2020-11-22 13:07:39,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:39,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:39,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:39,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:39,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/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 [2020-11-22 13:07:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:07:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:40,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:40,129 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-22 13:07:40,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:40 BoogieIcfgContainer [2020-11-22 13:07:40,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:40,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:40,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:40,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:40,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:39" (1/3) ... [2020-11-22 13:07:40,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50dd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:40, skipping insertion in model container [2020-11-22 13:07:40,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:39" (2/3) ... [2020-11-22 13:07:40,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50dd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:40, skipping insertion in model container [2020-11-22 13:07:40,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:40" (3/3) ... [2020-11-22 13:07:40,140 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound1.c [2020-11-22 13:07:40,151 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:40,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:07:40,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:07:40,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:40,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:07:40,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:40,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:40,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:40,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:40,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:40,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-22 13:07:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:07:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:40,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:07:40,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash 3636585, now seen corresponding path program 1 times [2020-11-22 13:07:40,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:40,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600398896] [2020-11-22 13:07:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:40,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:07:40,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276028621] [2020-11-22 13:07:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/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 [2020-11-22 13:07:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:40,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:07:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:40,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:40,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:07:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:40,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600398896] [2020-11-22 13:07:40,521 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:07:40,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276028621] [2020-11-22 13:07:40,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:40,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:07:40,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465409289] [2020-11-22 13:07:40,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:07:40,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:40,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:07:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:07:40,543 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-22 13:07:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:40,682 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-22 13:07:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:07:40,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 13:07:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:40,695 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:07:40,696 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 13:07:40,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:07:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 13:07:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2020-11-22 13:07:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 13:07:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-22 13:07:40,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2020-11-22 13:07:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:40,728 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-22 13:07:40,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:07:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-22 13:07:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:07:40,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:40,729 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-22 13:07:40,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 13:07:40,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash 970383885, now seen corresponding path program 1 times [2020-11-22 13:07:40,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:40,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347764579] [2020-11-22 13:07:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:40,947 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:07:40,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745711851] [2020-11-22 13:07:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/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 [2020-11-22 13:07:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:07:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:41,028 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 3, 3, 2, 1] term [2020-11-22 13:07:41,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:07:41,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:07:41,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-22 13:07:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:41,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:41,290 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:07:41,308 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 4, 3, 3, 2, 1] term [2020-11-22 13:07:41,308 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:07:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:41,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347764579] [2020-11-22 13:07:41,352 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:07:41,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745711851] [2020-11-22 13:07:41,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096216309] [2020-11-22 13:07:41,379 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 13:07:41,380 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:07:41,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:07:41,395 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:07:41,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:07:41,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:07:41,936 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-11-22 13:07:43,112 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-11-22 13:07:43,328 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-11-22 13:07:43,552 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-11-22 13:07:44,297 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-11-22 13:07:44,505 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-11-22 13:07:44,764 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-11-22 13:07:44,804 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:07:45,061 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-11-22 13:07:45,782 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 310 [2020-11-22 13:07:46,195 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-22 13:07:46,418 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-22 13:07:46,419 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:07:46,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:07:46,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2020-11-22 13:07:46,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645359011] [2020-11-22 13:07:46,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:07:46,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:46,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:07:46,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:07:46,423 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2020-11-22 13:07:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:46,513 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-22 13:07:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:46,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-22 13:07:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:46,514 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:07:46,514 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:07:46,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:07:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:07:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:07:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:07:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:07:46,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 13:07:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:46,516 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:07:46,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:07:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:07:46,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:07:46,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:07:46,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-11-22 13:07:46,753 INFO L270 CegarLoopResult]: At program point L13-1(lines 36 37) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (< 0 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~z~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-22 13:07:46,753 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 16) no Hoare annotation was computed. [2020-11-22 13:07:46,754 INFO L277 CegarLoopResult]: At program point L13-3(lines 12 18) the Hoare annotation is: true [2020-11-22 13:07:46,754 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 45) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~z~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-22 13:07:46,754 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2020-11-22 13:07:46,754 INFO L274 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-11-22 13:07:46,754 INFO L274 CegarLoopResult]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2020-11-22 13:07:46,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:46 BoogieIcfgContainer [2020-11-22 13:07:46,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:46,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:46,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:46,767 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:46,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:40" (3/4) ... [2020-11-22 13:07:46,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:07:46,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 13:07:46,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:07:46,778 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:07:46,779 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:07:46,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55983bcc-9d0e-4afd-8f51-b4362d60deae/bin/utaipan/witness.graphml [2020-11-22 13:07:46,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:46,823 INFO L168 Benchmark]: Toolchain (without parser) took 7602.67 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 71.3 MB in the beginning and 57.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,823 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:46,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.94 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 83.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,825 INFO L168 Benchmark]: Boogie Preprocessor took 19.91 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.4 MB in the end (delta: 749.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:46,825 INFO L168 Benchmark]: RCFGBuilder took 617.08 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 56.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,826 INFO L168 Benchmark]: TraceAbstraction took 6633.10 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 55.8 MB in the beginning and 60.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,826 INFO L168 Benchmark]: Witness Printer took 54.78 ms. Allocated memory is still 151.0 MB. Free memory was 60.7 MB in the beginning and 57.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:46,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.94 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 83.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.31 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.91 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.4 MB in the end (delta: 749.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 617.08 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 56.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6633.10 ms. Allocated memory was 109.1 MB in the beginning and 151.0 MB in the end (delta: 41.9 MB). Free memory was 55.8 MB in the beginning and 60.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * Witness Printer took 54.78 ms. Allocated memory is still 151.0 MB. Free memory was 60.7 MB in the beginning and 57.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((a == x && y == 0) && z == 0) && b == y - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((a == x && 0 < cond) && y == 0) && z == 0) && b == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 15 SDslu, 21 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 30 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 603 SizeOfPredicates, 15 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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...