./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_vardep_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_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/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 66fc40811a6b64eeba1619d2b2b45575ff6b207a .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:34:27,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:34:27,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:34:27,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:34:27,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:34:27,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:34:27,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:34:27,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:34:27,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:34:27,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:34:27,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:34:27,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:34:27,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:34:27,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:34:27,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:34:27,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:34:27,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:34:27,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:34:27,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:34:27,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:34:27,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:34:27,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:34:27,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:34:27,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:34:27,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:34:27,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:34:27,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:34:27,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:34:27,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:34:27,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:34:27,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:34:27,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:34:27,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:34:27,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:34:27,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:34:27,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:34:27,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:34:27,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:34:27,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:34:27,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:34:27,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:34:27,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:34:27,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:34:27,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:34:27,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:34:27,213 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:34:27,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:34:27,214 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:34:27,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:34:27,214 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:34:27,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:34:27,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:34:27,215 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:34:27,215 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:34:27,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:34:27,216 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:34:27,216 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:34:27,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:34:27,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:34:27,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:34:27,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:34:27,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:34:27,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:34:27,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:34:27,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:34:27,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:34:27,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:34:27,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:34:27,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:34:27,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:34:27,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:34:27,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:34:27,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:34:27,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:27,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:34:27,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:34:27,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:34:27,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:34:27,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:34:27,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:34:27,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:34:27,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:34:27,222 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_40e7166a-3845-4148-a177-e5628d3dcee4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fc40811a6b64eeba1619d2b2b45575ff6b207a [2020-11-28 07:34:27,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:34:27,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:34:27,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:34:27,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:34:27,498 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:34:27,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2020-11-28 07:34:27,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/data/e3abbb734/1629ff6c5d784044b75c2157513bed77/FLAG91dd07685 [2020-11-28 07:34:27,979 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:34:27,979 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2020-11-28 07:34:27,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/data/e3abbb734/1629ff6c5d784044b75c2157513bed77/FLAG91dd07685 [2020-11-28 07:34:28,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/data/e3abbb734/1629ff6c5d784044b75c2157513bed77 [2020-11-28 07:34:28,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:34:28,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:34:28,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:28,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:34:28,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:34:28,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d24f1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28, skipping insertion in model container [2020-11-28 07:34:28,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:34:28,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:34:28,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:28,610 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:34:28,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:28,639 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:34:28,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28 WrapperNode [2020-11-28 07:34:28,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:28,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:28,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:34:28,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:34:28,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:28,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:34:28,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:34:28,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:34:28,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:34:28,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:34:28,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:34:28,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:34:28,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:34:28,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:34:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:34:28,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:34:29,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:34:29,169 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:34:29,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29 BoogieIcfgContainer [2020-11-28 07:34:29,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:34:29,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:34:29,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:34:29,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:34:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:28" (1/3) ... [2020-11-28 07:34:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400b083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:29, skipping insertion in model container [2020-11-28 07:34:29,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (2/3) ... [2020-11-28 07:34:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400b083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:29, skipping insertion in model container [2020-11-28 07:34:29,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29" (3/3) ... [2020-11-28 07:34:29,184 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-11-28 07:34:29,192 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:34:29,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:34:29,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:34:29,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:34:29,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:34:29,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:34:29,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:34:29,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:34:29,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:34:29,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:34:29,244 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:34:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-28 07:34:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:34:29,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:34:29,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:29,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1798481, now seen corresponding path program 1 times [2020-11-28 07:34:29,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:29,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974677977] [2020-11-28 07:34:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974677977] [2020-11-28 07:34:29,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:29,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339091023] [2020-11-28 07:34:29,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:29,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:29,539 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2020-11-28 07:34:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:29,603 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2020-11-28 07:34:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:29,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:34:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:29,611 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:34:29,611 INFO L226 Difference]: Without dead ends: 7 [2020-11-28 07:34:29,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-28 07:34:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 07:34:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 07:34:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-28 07:34:29,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-11-28 07:34:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:29,643 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-28 07:34:29,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-28 07:34:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:34:29,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,644 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-28 07:34:29,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:34:29,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1728544423, now seen corresponding path program 1 times [2020-11-28 07:34:29,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:29,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643955283] [2020-11-28 07:34:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643955283] [2020-11-28 07:34:29,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599540961] [2020-11-28 07:34:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 07:34:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:29,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:34:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:30,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [412546974] [2020-11-28 07:34:30,761 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-28 07:34:30,761 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:34:30,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:34:30,770 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:34:30,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:34:31,279 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:34:31,411 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-11-28 07:34:31,801 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-11-28 07:34:31,929 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-28 07:34:31,932 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:31,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:34:31,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-11-28 07:34:31,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179733898] [2020-11-28 07:34:31,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:34:31,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:34:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2020-11-28 07:34:31,936 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2020-11-28 07:34:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:32,007 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-28 07:34:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:34:32,008 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-11-28 07:34:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:32,009 INFO L225 Difference]: With dead ends: 8 [2020-11-28 07:34:32,009 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:32,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=133, Unknown=1, NotChecked=0, Total=182 [2020-11-28 07:34:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:32,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-28 07:34:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:32,011 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:32,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:34:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:32,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:32,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:34:32,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:34:32,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:34:32,282 INFO L274 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-11-28 07:34:32,282 INFO L270 CegarLoopResult]: At program point L9-2(lines 7 27) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~j~0 0)) (let ((.cse0 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~j~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 .cse0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)))) [2020-11-28 07:34:32,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:34:32,282 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-11-28 07:34:32,283 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-28 07:34:32,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:32 BoogieIcfgContainer [2020-11-28 07:34:32,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:32,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:32,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:32,300 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:32,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29" (3/4) ... [2020-11-28 07:34:32,304 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:32,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:34:32,313 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:34:32,313 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:34:32,313 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:34:32,359 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40e7166a-3845-4148-a177-e5628d3dcee4/bin/utaipan/witness.graphml [2020-11-28 07:34:32,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:32,360 INFO L168 Benchmark]: Toolchain (without parser) took 3970.11 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 55.4 MB in the beginning and 52.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,360 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:32,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 53.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.50 ms. Allocated memory is still 75.5 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:32,362 INFO L168 Benchmark]: Boogie Preprocessor took 21.77 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 51.1 MB in the end (delta: 891.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,362 INFO L168 Benchmark]: RCFGBuilder took 473.96 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 38.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,363 INFO L168 Benchmark]: TraceAbstraction took 3126.65 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 38.3 MB in the beginning and 54.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,363 INFO L168 Benchmark]: Witness Printer took 59.11 ms. Allocated memory is still 92.3 MB. Free memory was 54.1 MB in the beginning and 52.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:32,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 53.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.50 ms. Allocated memory is still 75.5 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.77 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 51.1 MB in the end (delta: 891.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 473.96 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 38.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3126.65 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 38.3 MB in the beginning and 54.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.11 ms. Allocated memory is still 92.3 MB. Free memory was 54.1 MB in the beginning and 52.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((i == 0 && k == 0) && j == 0) || ((i + j <= k && k <= i + j) && 1 <= cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 17 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=1, 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 1 QuantifiedInterpolants, 765 SizeOfPredicates, 5 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 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...