./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ncompf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0502d3c21f5f4ac16678747b32ea8813b3ead6ef ................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:43:10,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:43:10,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:43:10,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:43:10,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:43:10,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:43:10,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:43:10,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:43:10,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:43:10,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:43:10,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:43:10,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:43:10,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:43:10,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:43:10,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:43:10,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:43:10,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:43:10,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:43:10,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:43:10,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:43:10,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:43:10,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:43:10,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:43:10,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:43:10,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:43:10,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:43:10,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:43:10,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:43:10,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:43:10,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:43:10,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:43:10,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:43:10,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:43:10,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:43:10,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:43:10,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:43:10,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:43:10,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:43:10,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:43:10,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:43:10,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:43:10,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:43:10,214 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:43:10,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:43:10,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:43:10,215 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:43:10,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:43:10,215 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:43:10,216 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:43:10,217 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:43:10,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:43:10,217 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:43:10,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:43:10,218 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:43:10,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:43:10,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:43:10,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:43:10,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:43:10,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:43:10,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:43:10,229 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:43:10,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:43:10,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:43:10,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:43:10,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:43:10,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:43:10,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:43:10,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:43:10,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:43:10,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:43:10,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:43:10,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:43:10,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:43:10,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:43:10,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0117dff4-2f12-4699-8582-43bcee673a52/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(__VERIFIER_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 -> 0502d3c21f5f4ac16678747b32ea8813b3ead6ef [2019-11-26 02:43:10,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:43:10,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:43:10,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:43:10,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:43:10,412 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:43:10,412 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/../../sv-benchmarks/c/array-fpi/ncompf.c [2019-11-26 02:43:10,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/data/f33ed30e2/8e84853430864b05975a79358679fbe8/FLAGb83c8df1a [2019-11-26 02:43:10,815 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:43:10,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/sv-benchmarks/c/array-fpi/ncompf.c [2019-11-26 02:43:10,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/data/f33ed30e2/8e84853430864b05975a79358679fbe8/FLAGb83c8df1a [2019-11-26 02:43:11,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/data/f33ed30e2/8e84853430864b05975a79358679fbe8 [2019-11-26 02:43:11,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:43:11,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:43:11,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:11,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:43:11,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:43:11,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc286a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11, skipping insertion in model container [2019-11-26 02:43:11,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:43:11,227 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:43:11,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:11,452 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:43:11,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:43:11,558 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:43:11,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11 WrapperNode [2019-11-26 02:43:11,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:43:11,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:11,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:43:11,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:43:11,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:43:11,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:43:11,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:43:11,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:43:11,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... [2019-11-26 02:43:11,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:43:11,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:43:11,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:43:11,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:43:11,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/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 [2019-11-26 02:43:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:43:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:43:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:43:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:43:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:43:12,107 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:43:12,108 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:43:12,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:12 BoogieIcfgContainer [2019-11-26 02:43:12,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:43:12,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:43:12,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:43:12,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:43:12,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:43:11" (1/3) ... [2019-11-26 02:43:12,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dbd254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:12, skipping insertion in model container [2019-11-26 02:43:12,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:43:11" (2/3) ... [2019-11-26 02:43:12,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dbd254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:43:12, skipping insertion in model container [2019-11-26 02:43:12,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:12" (3/3) ... [2019-11-26 02:43:12,116 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2019-11-26 02:43:12,124 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:43:12,130 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:43:12,158 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:43:12,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:43:12,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:43:12,179 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:43:12,179 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:43:12,179 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:43:12,179 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:43:12,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:43:12,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:43:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:43:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:43:12,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:12,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:12,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -471941506, now seen corresponding path program 1 times [2019-11-26 02:43:12,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:43:12,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421165390] [2019-11-26 02:43:12,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:43:12,303 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:43:12,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33232198] [2019-11-26 02:43:12,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/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 [2019-11-26 02:43:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:43:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:43:12,428 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:43:12,429 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:43:12,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:43:12,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:43:12 BoogieIcfgContainer [2019-11-26 02:43:12,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:43:12,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:43:12,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:43:12,656 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:43:12,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:43:12" (3/4) ... [2019-11-26 02:43:12,658 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:43:12,702 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0117dff4-2f12-4699-8582-43bcee673a52/bin/utaipan/witness.graphml [2019-11-26 02:43:12,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:43:12,704 INFO L168 Benchmark]: Toolchain (without parser) took 1505.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -120.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:12,705 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:12,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:12,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:12,707 INFO L168 Benchmark]: Boogie Preprocessor took 56.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:12,707 INFO L168 Benchmark]: RCFGBuilder took 446.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:12,708 INFO L168 Benchmark]: TraceAbstraction took 546.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:12,708 INFO L168 Benchmark]: Witness Printer took 46.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:12,711 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 546.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Witness Printer took 46.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L25] long long *c = malloc(sizeof(long long)*N); [L27] a[0] = 6 [L28] b[0] = 1 [L29] c[0] = 0 [L30] i=1 VAL [N=1] [L30] COND FALSE !(i