./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/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_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/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 a2b6fb2a091639658ccc80ce20cfd1c26b8b4813 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:15:10,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:15:10,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:15:10,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:15:10,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:15:10,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:15:10,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:15:10,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:15:10,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:15:10,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:15:10,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:15:10,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:15:10,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:15:10,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:15:10,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:15:10,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:15:10,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:15:10,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:15:10,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:15:10,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:15:10,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:15:10,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:15:10,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:15:10,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:15:10,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:15:10,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:15:10,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:15:10,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:15:10,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:15:10,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:15:10,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:15:10,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:15:10,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:15:10,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:15:10,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:15:10,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:15:10,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:15:10,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:15:10,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:15:10,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:15:10,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:15:10,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:15:10,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:15:10,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:15:10,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:15:10,297 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:15:10,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:15:10,298 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:15:10,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:15:10,298 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:15:10,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:15:10,299 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:15:10,300 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:15:10,301 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:15:10,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:15:10,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:15:10,301 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:15:10,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:15:10,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:15:10,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:15:10,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:15:10,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:15:10,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:15:10,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:15:10,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:15:10,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:15:10,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:15:10,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:15:10,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:15:10,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:15:10,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:15:10,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:15:10,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:15:10,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:15:10,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:15:10,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:15:10,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:15:10,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:15:10,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:15:10,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:15:10,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:15:10,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:15:10,310 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_7123cadc-d0c3-459d-9ffa-b837792f4cc4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2b6fb2a091639658ccc80ce20cfd1c26b8b4813 [2020-11-30 02:15:10,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:15:10,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:15:10,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:15:10,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:15:10,697 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:15:10,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/../../sv-benchmarks/c/loops/array-1.c [2020-11-30 02:15:10,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/data/ba4b60304/0ccf25a694ba4823b99fccecc154b8e5/FLAGc31ea6a2e [2020-11-30 02:15:11,307 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:15:11,308 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/sv-benchmarks/c/loops/array-1.c [2020-11-30 02:15:11,322 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/data/ba4b60304/0ccf25a694ba4823b99fccecc154b8e5/FLAGc31ea6a2e [2020-11-30 02:15:11,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/data/ba4b60304/0ccf25a694ba4823b99fccecc154b8e5 [2020-11-30 02:15:11,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:15:11,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:15:11,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:11,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:15:11,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:15:11,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:11,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a348b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11, skipping insertion in model container [2020-11-30 02:15:11,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:11,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:15:11,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:15:11,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:11,904 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:15:11,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:11,932 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:15:11,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11 WrapperNode [2020-11-30 02:15:11,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:11,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:11,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:15:11,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:15:11,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:11,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:11,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:11,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:15:11,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:15:11,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:15:12,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... [2020-11-30 02:15:12,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:15:12,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:15:12,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:15:12,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:15:12,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/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 02:15:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:15:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:15:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:15:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:15:12,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:15:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:15:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:15:12,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:15:12,628 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:15:12,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:12 BoogieIcfgContainer [2020-11-30 02:15:12,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:15:12,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:15:12,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:15:12,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:15:12,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:15:11" (1/3) ... [2020-11-30 02:15:12,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55574baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:12, skipping insertion in model container [2020-11-30 02:15:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:11" (2/3) ... [2020-11-30 02:15:12,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55574baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:12, skipping insertion in model container [2020-11-30 02:15:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:12" (3/3) ... [2020-11-30 02:15:12,640 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-11-30 02:15:12,651 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:15:12,656 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:15:12,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:15:12,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:15:12,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:15:12,694 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:15:12,694 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:15:12,694 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:15:12,694 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:15:12,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:15:12,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:15:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-30 02:15:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:15:12,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:12,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:15:12,715 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2097672, now seen corresponding path program 1 times [2020-11-30 02:15:12,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:12,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714880080] [2020-11-30 02:15:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:13,030 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 02:15:13,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714880080] [2020-11-30 02:15:13,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:13,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:15:13,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099728388] [2020-11-30 02:15:13,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:15:13,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:13,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:15:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:15:13,070 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-30 02:15:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:13,117 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 02:15:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:15:13,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:15:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:13,136 INFO L225 Difference]: With dead ends: 13 [2020-11-30 02:15:13,136 INFO L226 Difference]: Without dead ends: 6 [2020-11-30 02:15:13,140 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 02:15:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-30 02:15:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-30 02:15:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 02:15:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-30 02:15:13,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-30 02:15:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:13,190 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-30 02:15:13,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:15:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-30 02:15:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:15:13,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:13,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:15:13,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:15:13,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash 65135428, now seen corresponding path program 1 times [2020-11-30 02:15:13,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:13,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208533568] [2020-11-30 02:15:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:13,511 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 02:15:13,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208533568] [2020-11-30 02:15:13,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011028403] [2020-11-30 02:15:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/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 02:15:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:13,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:15:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:13,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 02:15:13,722 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-11-30 02:15:13,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:13,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:15:13,958 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,000 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-11-30 02:15:14,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,010 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,053 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:15:14,149 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-11-30 02:15:14,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:15:14,296 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-11-30 02:15:14,344 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:15:14,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-30 02:15:14,497 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:14,498 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:14,510 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:14,519 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,530 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:14,531 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:14,552 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,727 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-11-30 02:15:14,728 INFO L625 ElimStorePlain]: treesize reduction 244, result has 29.9 percent of original size [2020-11-30 02:15:14,748 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-11-30 02:15:14,748 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,759 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-11-30 02:15:14,759 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:14,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:14,847 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-11-30 02:15:14,847 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 8 variables, input treesize:700, output treesize:70 [2020-11-30 02:15:14,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:15:14,948 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:15:14,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:15:14,992 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 02:15:14,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:15,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,014 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,063 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 02:15:15,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,067 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,072 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-11-30 02:15:15,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,079 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,094 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,100 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,103 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,109 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,128 INFO L603 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-11-30 02:15:15,135 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 5 conjuncts [2020-11-30 02:15:15,275 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-11-30 02:15:15,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-11-30 02:15:15,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-11-30 02:15:15,799 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2020-11-30 02:15:15,904 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:15,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 151 [2020-11-30 02:15:15,906 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,906 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-30 02:15:15,907 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-30 02:15:15,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-30 02:15:15,909 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,912 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,915 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,918 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,919 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,921 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:15,926 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,930 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,931 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,933 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-11-30 02:15:15,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,936 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 02:15:15,940 INFO L603 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-11-30 02:15:15,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,943 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,948 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,952 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 02:15:15,953 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,955 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,959 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:15,964 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:16,004 INFO L625 ElimStorePlain]: treesize reduction 476, result has 1.9 percent of original size [2020-11-30 02:15:16,005 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:16,789 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 144 [2020-11-30 02:15:16,793 INFO L625 ElimStorePlain]: treesize reduction 621, result has 35.7 percent of original size [2020-11-30 02:15:16,793 INFO L513 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2020-11-30 02:15:16,815 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2020-11-30 02:15:16,849 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2020-11-30 02:15:16,851 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:16,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:16,856 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:19,280 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 138 [2020-11-30 02:15:19,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:19,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2020-11-30 02:15:19,352 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2020-11-30 02:15:19,353 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:19,358 INFO L625 ElimStorePlain]: treesize reduction 9, result has 10.0 percent of original size [2020-11-30 02:15:19,358 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:19,657 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-11-30 02:15:19,657 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:19,680 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2020-11-30 02:15:19,713 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2020-11-30 02:15:19,714 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:19,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:19,719 INFO L545 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:19,995 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-30 02:15:19,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:19,996 INFO L513 ElimStorePlain]: Eliminatee v_prenex_21 vanished before elimination [2020-11-30 02:15:20,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2020-11-30 02:15:20,053 INFO L350 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2020-11-30 02:15:20,053 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 133 [2020-11-30 02:15:20,054 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:20,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:20,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:20,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:20,061 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 02:15:20,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:15:20,065 INFO L545 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:20,080 INFO L625 ElimStorePlain]: treesize reduction 27, result has 25.0 percent of original size [2020-11-30 02:15:20,080 INFO L545 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:20,299 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-11-30 02:15:20,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:20,315 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2020-11-30 02:15:20,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2020-11-30 02:15:20,341 INFO L545 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2020-11-30 02:15:20,345 INFO L625 ElimStorePlain]: treesize reduction 9, result has 10.0 percent of original size [2020-11-30 02:15:20,345 INFO L545 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:15:20,544 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-30 02:15:20,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:15:20,545 INFO L513 ElimStorePlain]: Eliminatee v_prenex_8 vanished before elimination [2020-11-30 02:15:20,545 INFO L513 ElimStorePlain]: Eliminatee v_prenex_50 vanished before elimination [2020-11-30 02:15:20,674 INFO L545 ElimStorePlain]: Start of recursive call 1: 60 dim-0 vars, 10 dim-2 vars, End of recursive call: 12 dim-0 vars, and 6 xjuncts. [2020-11-30 02:15:20,675 INFO L244 ElimStorePlain]: Needed 13 recursive calls to eliminate 70 variables, input treesize:1015, output treesize:479 [2020-11-30 02:15:20,946 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 02:15:20,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579337869] [2020-11-30 02:15:20,979 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-30 02:15:20,979 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:20,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:20,991 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:20,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:21,051 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:21,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:21,560 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:21,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:15:21,663 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:21,914 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-11-30 02:15:22,065 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-11-30 02:15:22,311 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-11-30 02:15:22,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:22,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:22,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2020-11-30 02:15:22,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361606904] [2020-11-30 02:15:22,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:15:22,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:15:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:15:22,317 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 10 states. [2020-11-30 02:15:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:22,386 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2020-11-30 02:15:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:15:22,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 5 [2020-11-30 02:15:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:22,387 INFO L225 Difference]: With dead ends: 6 [2020-11-30 02:15:22,387 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:15:22,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:15:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:15:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:15:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:15:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:15:22,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-30 02:15:22,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:22,389 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:15:22,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:15:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:15:22,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:15:22,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:15:22,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:15:22,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:15:22,631 INFO L270 CegarLoopResult]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#array~0.offset| 0)) (.cse1 (= ULTIMATE.start_main_~SIZE~0 1))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~menor~0 (select (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|) |ULTIMATE.start_main_~#array~0.offset|))) (and .cse0 (= ULTIMATE.start_main_~j~0 0) .cse1))) [2020-11-30 02:15:22,631 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-30 02:15:22,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:15:22,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:15:22,632 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-30 02:15:22,632 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-30 02:15:22,637 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:15:22,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:15:22,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:15:22 BoogieIcfgContainer [2020-11-30 02:15:22,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:15:22,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:15:22,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:15:22,646 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:15:22,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:12" (3/4) ... [2020-11-30 02:15:22,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:15:22,659 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 02:15:22,659 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 02:15:22,659 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:15:22,659 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:15:22,702 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7123cadc-d0c3-459d-9ffa-b837792f4cc4/bin/utaipan/witness.graphml [2020-11-30 02:15:22,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:15:22,703 INFO L168 Benchmark]: Toolchain (without parser) took 11039.64 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 60.3 MB in the beginning and 120.6 MB in the end (delta: -60.3 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,704 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 69.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:15:22,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.27 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 70.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 69.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,706 INFO L168 Benchmark]: Boogie Preprocessor took 51.73 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 68.3 MB in the end (delta: 905.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:15:22,707 INFO L168 Benchmark]: RCFGBuilder took 581.99 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 49.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,707 INFO L168 Benchmark]: TraceAbstraction took 10013.41 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 48.9 MB in the beginning and 42.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,708 INFO L168 Benchmark]: Witness Printer took 56.08 ms. Allocated memory is still 142.6 MB. Free memory was 42.4 MB in the beginning and 120.6 MB in the end (delta: -78.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:22,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 69.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.27 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 70.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 69.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.73 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 68.3 MB in the end (delta: 905.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 581.99 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 49.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10013.41 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 48.9 MB in the beginning and 42.4 MB in the end (delta: 6.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. * Witness Printer took 56.08 ms. Allocated memory is still 142.6 MB. Free memory was 42.4 MB in the beginning and 120.6 MB in the end (delta: -78.2 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 #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant [2020-11-30 02:15:22,726 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:15:22,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((array == 0 && SIZE == 1) && menor <= unknown-#memory_int-unknown[array][array]) || ((array == 0 && j == 0) && SIZE == 1) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 2 QuantifiedInterpolants, 1019 SizeOfPredicates, 16 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...