./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss3f.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_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ss3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/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 248b2d90a91115122eed8c2bc3ad2e8879fe9067 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:36:31,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:36:31,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:36:31,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:36:31,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:36:31,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:36:31,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:36:31,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:36:31,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:36:31,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:36:31,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:36:31,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:36:31,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:36:31,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:36:31,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:36:31,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:36:31,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:36:31,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:36:31,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:36:31,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:36:31,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:36:31,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:36:31,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:36:31,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:36:31,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:36:31,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:36:31,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:36:31,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:36:31,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:36:31,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:36:31,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:36:31,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:36:31,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:36:31,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:36:31,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:36:31,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:36:31,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:36:31,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:36:31,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:36:31,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:36:31,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:36:31,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:36:32,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:36:32,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:36:32,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:36:32,012 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:36:32,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:36:32,013 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:36:32,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:36:32,013 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:36:32,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:36:32,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:36:32,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:36:32,015 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:36:32,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:36:32,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:36:32,016 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:36:32,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:36:32,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:36:32,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:36:32,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:36:32,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:36:32,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:36:32,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:36:32,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:36:32,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:36:32,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:36:32,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:36:32,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:36:32,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:36:32,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:36:32,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:36:32,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:36:32,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:36:32,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:36:32,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:36:32,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:36:32,021 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_cf77943e-aeef-4a03-9c5c-75878415e363/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 248b2d90a91115122eed8c2bc3ad2e8879fe9067 [2020-11-28 07:36:32,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:36:32,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:36:32,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:36:32,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:36:32,382 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:36:32,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/../../sv-benchmarks/c/array-fpi/ss3f.c [2020-11-28 07:36:32,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/data/c694d62a6/f87503bb6ecf4901b69d9a3710c803d9/FLAGac53241e9 [2020-11-28 07:36:32,873 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:36:32,873 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/sv-benchmarks/c/array-fpi/ss3f.c [2020-11-28 07:36:32,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/data/c694d62a6/f87503bb6ecf4901b69d9a3710c803d9/FLAGac53241e9 [2020-11-28 07:36:33,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/data/c694d62a6/f87503bb6ecf4901b69d9a3710c803d9 [2020-11-28 07:36:33,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:36:33,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:36:33,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:33,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:36:33,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:36:33,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4137a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33, skipping insertion in model container [2020-11-28 07:36:33,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:36:33,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:36:33,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:33,556 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:36:33,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:33,612 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:36:33,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33 WrapperNode [2020-11-28 07:36:33,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:33,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:33,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:36:33,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:36:33,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:33,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:36:33,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:36:33,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:36:33,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... [2020-11-28 07:36:33,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:36:33,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:36:33,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:36:33,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:36:33,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/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 07:36:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:36:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:36:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:36:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:36:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:36:33,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:36:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:36:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:36:34,385 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:36:34,386 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-28 07:36:34,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:34 BoogieIcfgContainer [2020-11-28 07:36:34,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:36:34,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:36:34,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:36:34,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:36:34,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:36:33" (1/3) ... [2020-11-28 07:36:34,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbb92ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:34, skipping insertion in model container [2020-11-28 07:36:34,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:33" (2/3) ... [2020-11-28 07:36:34,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbb92ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:34, skipping insertion in model container [2020-11-28 07:36:34,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:34" (3/3) ... [2020-11-28 07:36:34,395 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-11-28 07:36:34,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:36:34,419 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:36:34,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:36:34,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:36:34,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:36:34,470 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:36:34,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:36:34,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:36:34,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:36:34,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:36:34,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:36:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:36:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:36:34,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:34,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:34,486 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:34,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2005617826, now seen corresponding path program 1 times [2020-11-28 07:36:34,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:34,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370121753] [2020-11-28 07:36:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:34,673 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 07:36:34,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370121753] [2020-11-28 07:36:34,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:34,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:34,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896729168] [2020-11-28 07:36:34,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:34,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:34,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:34,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:34,695 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-11-28 07:36:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:34,749 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2020-11-28 07:36:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:34,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 07:36:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:34,758 INFO L225 Difference]: With dead ends: 24 [2020-11-28 07:36:34,758 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:36:34,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:36:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:36:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:36:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2020-11-28 07:36:34,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2020-11-28 07:36:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:34,791 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-28 07:36:34,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-11-28 07:36:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:36:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:34,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:34,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:36:34,793 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash -458651171, now seen corresponding path program 1 times [2020-11-28 07:36:34,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:34,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136027052] [2020-11-28 07:36:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:36:34,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136027052] [2020-11-28 07:36:34,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:34,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:36:34,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152750323] [2020-11-28 07:36:34,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:34,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:34,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:34,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:34,880 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 4 states. [2020-11-28 07:36:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:34,936 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2020-11-28 07:36:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:34,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 07:36:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:34,938 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:36:34,938 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 07:36:34,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 07:36:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 07:36:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 07:36:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-28 07:36:34,943 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2020-11-28 07:36:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:34,943 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-28 07:36:34,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-11-28 07:36:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:36:34,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:34,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:34,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:36:34,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1442874590, now seen corresponding path program 1 times [2020-11-28 07:36:34,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:34,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859939836] [2020-11-28 07:36:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:34,991 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:36:34,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554475158] [2020-11-28 07:36:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/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 07:36:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:36:35,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:36:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:36:35,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:36:35,191 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:36:35,191 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:36:35,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:36:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:36:35 BoogieIcfgContainer [2020-11-28 07:36:35,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:36:35,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:36:35,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:36:35,444 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:36:35,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:34" (3/4) ... [2020-11-28 07:36:35,446 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:36:35,503 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cf77943e-aeef-4a03-9c5c-75878415e363/bin/utaipan/witness.graphml [2020-11-28 07:36:35,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:36:35,506 INFO L168 Benchmark]: Toolchain (without parser) took 2232.22 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 98.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 624.0 kB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,506 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:36:35,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 78.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.36 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,508 INFO L168 Benchmark]: Boogie Preprocessor took 49.40 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,509 INFO L168 Benchmark]: RCFGBuilder took 657.91 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 48.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,510 INFO L168 Benchmark]: TraceAbstraction took 1054.20 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 48.1 MB in the beginning and 100.1 MB in the end (delta: -52.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,510 INFO L168 Benchmark]: Witness Printer took 59.99 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:35,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 78.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.36 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.40 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 657.91 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 48.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1054.20 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 48.1 MB in the beginning and 100.1 MB in the end (delta: -52.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 59.99 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 98.0 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.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i