./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --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_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/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 e274006309db7a6ae6e7d3a14420548e35b766ad ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:42:14,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:42:14,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:42:14,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:42:14,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:42:14,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:42:14,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:42:14,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:42:14,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:42:14,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:42:14,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:42:14,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:42:14,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:42:14,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:42:14,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:42:14,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:42:14,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:42:14,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:42:14,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:42:14,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:42:14,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:42:14,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:42:14,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:42:14,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:42:14,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:42:14,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:42:14,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:42:14,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:42:14,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:42:14,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:42:14,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:42:14,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:42:14,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:42:14,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:42:14,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:42:14,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:42:14,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:42:14,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:42:14,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:42:14,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:42:14,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:42:14,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:42:14,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:42:14,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:42:14,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:42:14,644 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:42:14,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:42:14,645 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:42:14,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:42:14,645 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:42:14,645 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:42:14,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:42:14,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:42:14,647 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:42:14,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:42:14,648 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:42:14,648 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:42:14,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:42:14,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:42:14,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:42:14,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:42:14,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:42:14,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:42:14,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:42:14,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:42:14,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:42:14,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:42:14,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:42:14,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:42:14,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:42:14,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:42:14,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:42:14,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:42:14,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:42:14,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:42:14,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:42:14,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:42:14,654 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:42:14,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:42:14,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:42:14,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:42:14,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:42:14,655 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_4afbff14-2a19-4a45-bed6-94d5d0512644/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e274006309db7a6ae6e7d3a14420548e35b766ad [2020-11-30 01:42:14,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:42:14,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:42:14,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:42:14,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:42:14,986 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:42:14,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/array_3-1.i [2020-11-30 01:42:15,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/data/52f434a07/00bed89cf7624a2bb998fc2f8c250c2d/FLAGca011edf5 [2020-11-30 01:42:15,651 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:42:15,654 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/sv-benchmarks/c/loop-acceleration/array_3-1.i [2020-11-30 01:42:15,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/data/52f434a07/00bed89cf7624a2bb998fc2f8c250c2d/FLAGca011edf5 [2020-11-30 01:42:15,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/data/52f434a07/00bed89cf7624a2bb998fc2f8c250c2d [2020-11-30 01:42:15,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:42:15,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:42:16,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:16,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:42:16,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:42:16,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:15" (1/1) ... [2020-11-30 01:42:16,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7450ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16, skipping insertion in model container [2020-11-30 01:42:16,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:15" (1/1) ... [2020-11-30 01:42:16,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:42:16,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:42:16,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:16,281 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:42:16,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:16,312 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:42:16,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16 WrapperNode [2020-11-30 01:42:16,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:16,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:16,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:42:16,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:42:16,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:16,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:42:16,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:42:16,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:42:16,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... [2020-11-30 01:42:16,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:42:16,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:42:16,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:42:16,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:42:16,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/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 [2020-11-30 01:42:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:42:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:42:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:42:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:42:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:42:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:42:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:42:16,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:42:16,889 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 01:42:16,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:16 BoogieIcfgContainer [2020-11-30 01:42:16,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:42:16,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:42:16,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:42:16,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:42:16,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:42:15" (1/3) ... [2020-11-30 01:42:16,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa6703d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:16, skipping insertion in model container [2020-11-30 01:42:16,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:16" (2/3) ... [2020-11-30 01:42:16,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa6703d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:16, skipping insertion in model container [2020-11-30 01:42:16,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:16" (3/3) ... [2020-11-30 01:42:16,903 INFO L111 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2020-11-30 01:42:16,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:42:16,921 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:42:16,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:42:16,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:42:16,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:42:16,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:42:16,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:42:16,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:42:16,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:42:16,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:42:16,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:42:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 01:42:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:42:17,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:17,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:17,010 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash 193007955, now seen corresponding path program 1 times [2020-11-30 01:42:17,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:17,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465556596] [2020-11-30 01:42:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:17,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465556596] [2020-11-30 01:42:17,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:17,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:42:17,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463099111] [2020-11-30 01:42:17,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:42:17,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:42:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:42:17,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:42:17,227 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-11-30 01:42:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:17,319 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2020-11-30 01:42:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:42:17,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 01:42:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:17,332 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:42:17,332 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 01:42:17,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:42:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 01:42:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2020-11-30 01:42:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:42:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-30 01:42:17,375 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2020-11-30 01:42:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:17,376 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-30 01:42:17,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:42:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-30 01:42:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:42:17,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:17,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:17,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:42:17,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1484239973, now seen corresponding path program 1 times [2020-11-30 01:42:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:17,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189515709] [2020-11-30 01:42:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:17,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189515709] [2020-11-30 01:42:17,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387656722] [2020-11-30 01:42:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/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 [2020-11-30 01:42:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:17,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:42:17,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:17,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:17,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1706749058] [2020-11-30 01:42:17,675 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-30 01:42:17,675 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:42:17,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:42:17,691 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:42:17,692 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:42:18,641 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:42:18,965 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-11-30 01:42:19,230 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-11-30 01:42:19,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:42:19,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2020-11-30 01:42:19,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559514476] [2020-11-30 01:42:19,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:42:19,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:42:19,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:42:19,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:42:19,236 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 7 states. [2020-11-30 01:42:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:19,312 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-30 01:42:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:42:19,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-30 01:42:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:19,315 INFO L225 Difference]: With dead ends: 19 [2020-11-30 01:42:19,315 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:42:19,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:42:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:42:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 01:42:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:42:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-30 01:42:19,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2020-11-30 01:42:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:19,323 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-30 01:42:19,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:42:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 01:42:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:42:19,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:19,331 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:19,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:42:19,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash 207017367, now seen corresponding path program 1 times [2020-11-30 01:42:19,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:19,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055409151] [2020-11-30 01:42:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:42:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055409151] [2020-11-30 01:42:19,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769363306] [2020-11-30 01:42:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/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 [2020-11-30 01:42:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:19,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:42:19,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:42:19,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:42:19,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1689070951] [2020-11-30 01:42:19,695 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 01:42:19,695 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:42:19,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:42:19,696 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:42:19,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:42:20,335 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:42:20,483 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-11-30 01:42:20,724 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-11-30 01:42:20,850 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-11-30 01:42:20,982 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-11-30 01:42:21,152 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-11-30 01:42:21,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:42:21,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:42:21,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-11-30 01:42:21,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006599851] [2020-11-30 01:42:21,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:42:21,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:42:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:42:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:42:21,161 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 7 states. [2020-11-30 01:42:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:21,245 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-11-30 01:42:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:42:21,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-30 01:42:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:21,247 INFO L225 Difference]: With dead ends: 44 [2020-11-30 01:42:21,248 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 01:42:21,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:42:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 01:42:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2020-11-30 01:42:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:42:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-30 01:42:21,259 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-11-30 01:42:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:21,261 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 01:42:21,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:42:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 01:42:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:42:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:21,262 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:21,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-30 01:42:21,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1802243150, now seen corresponding path program 2 times [2020-11-30 01:42:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309805020] [2020-11-30 01:42:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:42:21,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309805020] [2020-11-30 01:42:21,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081962826] [2020-11-30 01:42:21,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:21,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 01:42:21,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:42:21,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:42:21,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:42:21,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49143255] [2020-11-30 01:42:21,737 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 01:42:21,738 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:42:21,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:42:21,738 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:42:21,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:42:22,246 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:42:22,405 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-11-30 01:42:22,637 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-11-30 01:42:22,767 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-11-30 01:42:22,903 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-11-30 01:42:23,076 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-11-30 01:42:23,077 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:42:23,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:42:23,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-11-30 01:42:23,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000865791] [2020-11-30 01:42:23,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:42:23,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:42:23,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:42:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:42:23,080 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 9 states. [2020-11-30 01:42:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:23,173 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-11-30 01:42:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:42:23,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-11-30 01:42:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:23,175 INFO L225 Difference]: With dead ends: 25 [2020-11-30 01:42:23,175 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:42:23,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:42:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:42:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:42:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:42:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:42:23,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 01:42:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:23,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:42:23,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:42:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:42:23,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:42:23,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-30 01:42:23,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:42:23,499 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-11-30 01:42:23,614 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-11-30 01:42:23,617 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-30 01:42:23,617 INFO L277 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2020-11-30 01:42:23,617 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:42:23,617 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 32) no Hoare annotation was computed. [2020-11-30 01:42:23,618 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 32) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_main_~i~0) (<= |#t~string1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (= |#NULL.base| 0) (< ULTIMATE.start_main_~i~0 1024) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-11-30 01:42:23,618 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 01:42:23,618 INFO L274 CegarLoopResult]: For program point L28-5(lines 28 32) no Hoare annotation was computed. [2020-11-30 01:42:23,619 INFO L270 CegarLoopResult]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (<= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_main_~i~0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= ULTIMATE.start_main_~i~0 1024) (= |#NULL.base| 0) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (= |#t~string0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-11-30 01:42:23,619 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 01:42:23,619 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 01:42:23,619 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 01:42:23,619 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:42:23,620 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-11-30 01:42:23,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,641 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,642 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,642 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:42:23 BoogieIcfgContainer [2020-11-30 01:42:23,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:42:23,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:42:23,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:42:23,650 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:42:23,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:16" (3/4) ... [2020-11-30 01:42:23,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:42:23,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 01:42:23,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 01:42:23,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:42:23,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:42:23,712 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4afbff14-2a19-4a45-bed6-94d5d0512644/bin/utaipan/witness.graphml [2020-11-30 01:42:23,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:42:23,713 INFO L168 Benchmark]: Toolchain (without parser) took 7715.85 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 81.9 MB in the beginning and 101.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,714 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:42:23,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.33 ms. Allocated memory is still 113.2 MB. Free memory was 81.7 MB in the beginning and 90.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 113.2 MB. Free memory was 90.9 MB in the beginning and 89.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,715 INFO L168 Benchmark]: Boogie Preprocessor took 25.82 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 88.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:42:23,716 INFO L168 Benchmark]: RCFGBuilder took 515.09 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 72.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,716 INFO L168 Benchmark]: TraceAbstraction took 6754.86 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 71.4 MB in the beginning and 104.5 MB in the end (delta: -33.1 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,717 INFO L168 Benchmark]: Witness Printer took 62.78 ms. Allocated memory is still 182.5 MB. Free memory was 104.5 MB in the beginning and 101.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:23,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.33 ms. Allocated memory is still 113.2 MB. Free memory was 81.7 MB in the beginning and 90.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 113.2 MB. Free memory was 90.9 MB in the beginning and 89.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.82 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 88.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.09 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 72.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6754.86 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 71.4 MB in the beginning and 104.5 MB in the end (delta: -33.1 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. * Witness Printer took 62.78 ms. Allocated memory is still 182.5 MB. Free memory was 104.5 MB in the beginning and 101.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant [2020-11-30 01:42:23,740 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,740 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,740 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,745 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: (((((((((("array_3-1.c" <= 0 && 0 <= "0") && 0 <= i) && 0 <= A) && i <= 1024) && #NULL == 0) && 0 <= "array_3-1.c") && #NULL == 0) && "0" == 0) && 0 <= "array_3-1.c") && A == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant [2020-11-30 01:42:23,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:42:23,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:42:23,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: ((((((((((0 <= "0" && 0 <= i) && "array_3-1.c" <= 0) && 0 <= A) && #NULL == 0) && i < 1024) && 0 <= "array_3-1.c") && #NULL == 0) && 0 <= "array_3-1.c") && A == 0) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 64 SDslu, 42 SDs, 0 SdLazy, 84 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 13 NumberOfFragments, 75 HoareAnnotationTreeSize, 3 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 227 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 79 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 2021 SizeOfPredicates, 3 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 36/48 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: OVERALL_TIME[ms]: 967, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 649, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 641, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 294, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 227, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 21, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 9, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 601, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 600, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 7, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 61, DAG_COMPRESSION_RETAINED_NODES: 24, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...