./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-1.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_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum_array-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/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 729bcf7bc8da07a9502e2c955dd21c14a257521f ............................................................................................................................................................................................................................................................................................................. 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 07:38:34,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:34,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:34,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:34,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:34,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:34,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:34,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:34,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:34,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:34,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:34,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:34,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:34,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:34,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:34,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:34,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:34,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:34,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:34,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:34,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:34,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:34,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:34,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:34,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:35,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:35,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:35,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:35,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:35,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:35,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:35,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:35,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:35,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:35,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:35,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:35,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:35,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:35,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:35,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:35,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:35,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:35,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:35,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:35,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:35,070 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:35,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:35,070 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:35,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:35,071 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:35,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:35,071 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:35,072 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:35,073 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:35,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:35,073 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:35,073 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:35,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:35,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:35,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:35,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:35,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:35,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:35,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:35,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:35,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:35,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:35,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:35,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:35,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:35,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:35,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:35,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:35,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:35,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:35,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:35,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:35,080 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:35,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:35,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:35,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:35,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:35,081 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_ce2e2390-e219-433b-aad6-5aad8886f022/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 729bcf7bc8da07a9502e2c955dd21c14a257521f [2020-11-28 07:38:35,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:35,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:35,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:35,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:35,384 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:35,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/../../sv-benchmarks/c/loops/sum_array-1.c [2020-11-28 07:38:35,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/data/d6250d471/4fbea3c4894347c8b2ee7d801ce8dc3c/FLAG4c8413699 [2020-11-28 07:38:35,861 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:35,862 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/sv-benchmarks/c/loops/sum_array-1.c [2020-11-28 07:38:35,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/data/d6250d471/4fbea3c4894347c8b2ee7d801ce8dc3c/FLAG4c8413699 [2020-11-28 07:38:36,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/data/d6250d471/4fbea3c4894347c8b2ee7d801ce8dc3c [2020-11-28 07:38:36,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:36,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:36,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:36,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:36,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:36,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5c452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36, skipping insertion in model container [2020-11-28 07:38:36,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:36,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:36,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:36,534 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:36,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:36,577 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:36,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36 WrapperNode [2020-11-28 07:38:36,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:36,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:36,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:36,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:36,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:36,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:36,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:36,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:36,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:36,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:36,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:36,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:36,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/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 07:38:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:38:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:36,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:38:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:38:37,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:37,315 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 07:38:37,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37 BoogieIcfgContainer [2020-11-28 07:38:37,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:37,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:37,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:37,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:37,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:36" (1/3) ... [2020-11-28 07:38:37,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a50dceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:37, skipping insertion in model container [2020-11-28 07:38:37,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (2/3) ... [2020-11-28 07:38:37,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a50dceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:37, skipping insertion in model container [2020-11-28 07:38:37,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37" (3/3) ... [2020-11-28 07:38:37,328 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-11-28 07:38:37,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:37,342 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:37,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:37,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:37,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:37,378 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:37,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:37,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:37,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:37,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:37,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:38:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:38:37,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:37,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:37,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:37,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2134006892, now seen corresponding path program 1 times [2020-11-28 07:38:37,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:37,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604201796] [2020-11-28 07:38:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:37,698 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 07:38:37,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604201796] [2020-11-28 07:38:37,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:37,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:38:37,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141182330] [2020-11-28 07:38:37,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:38:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:38:37,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:37,729 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-11-28 07:38:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:37,873 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-28 07:38:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:37,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:38:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:37,887 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:38:37,888 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:38:37,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:38:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-11-28 07:38:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:38:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-28 07:38:37,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2020-11-28 07:38:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:37,922 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-28 07:38:37,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:38:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-11-28 07:38:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:38:37,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:37,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:37,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:37,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1957198131, now seen corresponding path program 1 times [2020-11-28 07:38:37,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:37,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941059494] [2020-11-28 07:38:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:38,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:38,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:38,121 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:38:38,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:38,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:38,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:38 BoogieIcfgContainer [2020-11-28 07:38:38,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:38,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:38,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:38,152 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:38,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37" (3/4) ... [2020-11-28 07:38:38,155 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:38,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce2e2390-e219-433b-aad6-5aad8886f022/bin/utaipan/witness.graphml [2020-11-28 07:38:38,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:38,199 INFO L168 Benchmark]: Toolchain (without parser) took 1928.49 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 67.1 MB in the beginning and 63.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,200 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:38,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.83 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 64.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,202 INFO L168 Benchmark]: Boogie Preprocessor took 41.23 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 61.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:38,203 INFO L168 Benchmark]: RCFGBuilder took 653.14 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 63.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,204 INFO L168 Benchmark]: TraceAbstraction took 831.70 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 62.6 MB in the beginning and 65.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,204 INFO L168 Benchmark]: Witness Printer took 45.95 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 63.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:38,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.83 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 64.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.23 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 61.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 653.14 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 63.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 831.70 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 62.6 MB in the beginning and 65.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 45.95 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 63.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i