./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Et4_true.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Et4_true.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53536d1fdd6afdf5702d18ef21a8c05f68768569 .................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:45:50,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:45:50,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:45:50,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:45:50,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:45:50,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:45:50,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:45:50,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:45:50,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:45:50,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:45:50,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:45:50,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:45:50,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:45:50,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:45:50,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:45:50,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:45:50,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:45:50,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:45:50,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:45:50,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:45:50,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:45:50,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:45:50,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:45:50,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:45:50,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:45:50,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:45:50,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:45:50,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:45:50,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:45:50,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:45:50,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:45:50,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:45:50,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:45:50,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:45:50,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:45:50,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:45:50,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:45:50,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:45:50,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:45:50,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:45:50,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:45:50,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:45:50,253 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:45:50,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:45:50,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:45:50,255 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:45:50,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:45:50,255 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:45:50,255 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:45:50,255 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:45:50,255 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:45:50,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:45:50,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:45:50,256 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:45:50,256 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:45:50,256 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:45:50,257 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:45:50,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:45:50,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:45:50,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:45:50,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:45:50,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:45:50,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:45:50,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:45:50,259 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:45:50,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:45:50,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:45:50,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:45:50,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:45:50,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:45:50,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:45:50,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:45:50,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:45:50,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:45:50,260 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:45:50,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:45:50,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:45:50,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:45:50,261 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_f3f0f4e0-4e11-4910-b570-97d2563b1d87/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53536d1fdd6afdf5702d18ef21a8c05f68768569 [2019-11-26 02:45:50,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:45:50,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:45:50,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:45:50,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:45:50,415 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:45:50,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/../../sv-benchmarks/c/termination-numeric/Et4_true.c [2019-11-26 02:45:50,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/data/9626f7865/6bb2138519354f0085eef231d4d3caa3/FLAG6ee37ff25 [2019-11-26 02:45:50,884 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:45:50,885 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/sv-benchmarks/c/termination-numeric/Et4_true.c [2019-11-26 02:45:50,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/data/9626f7865/6bb2138519354f0085eef231d4d3caa3/FLAG6ee37ff25 [2019-11-26 02:45:50,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/data/9626f7865/6bb2138519354f0085eef231d4d3caa3 [2019-11-26 02:45:50,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:45:50,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:45:50,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:50,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:45:50,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:45:50,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:50" (1/1) ... [2019-11-26 02:45:50,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312eab7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:50, skipping insertion in model container [2019-11-26 02:45:50,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:50" (1/1) ... [2019-11-26 02:45:50,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:45:50,950 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:45:51,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:51,151 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:45:51,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:51,248 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:45:51,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51 WrapperNode [2019-11-26 02:45:51,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:51,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:51,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:45:51,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:45:51,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:51,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:45:51,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:45:51,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:45:51,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... [2019-11-26 02:45:51,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:45:51,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:45:51,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:45:51,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:45:51,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/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 02:45:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure loop [2019-11-26 02:45:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure loop [2019-11-26 02:45:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:45:51,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:45:51,808 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:45:51,808 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:45:51,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:51 BoogieIcfgContainer [2019-11-26 02:45:51,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:45:51,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:45:51,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:45:51,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:45:51,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:45:50" (1/3) ... [2019-11-26 02:45:51,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1342c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:51, skipping insertion in model container [2019-11-26 02:45:51,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:51" (2/3) ... [2019-11-26 02:45:51,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1342c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:51, skipping insertion in model container [2019-11-26 02:45:51,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:51" (3/3) ... [2019-11-26 02:45:51,819 INFO L109 eAbstractionObserver]: Analyzing ICFG Et4_true.c [2019-11-26 02:45:51,826 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:45:51,833 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2019-11-26 02:45:51,844 INFO L249 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2019-11-26 02:45:51,873 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:45:51,873 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:45:51,874 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:45:51,874 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:45:51,874 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:45:51,874 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:45:51,874 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:45:51,875 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:45:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-11-26 02:45:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:45:51,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:51,897 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:45:51,898 INFO L410 AbstractCegarLoop]: === Iteration 1 === [loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:45:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2019-11-26 02:45:51,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:45:51,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768955333] [2019-11-26 02:45:51,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:45:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:52,008 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:45:52,009 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:45:52,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:45:52 BoogieIcfgContainer [2019-11-26 02:45:52,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:45:52,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:45:52,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:45:52,027 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:45:52,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:51" (3/4) ... [2019-11-26 02:45:52,029 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:45:52,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f3f0f4e0-4e11-4910-b570-97d2563b1d87/bin/utaipan/witness.graphml [2019-11-26 02:45:52,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:45:52,067 INFO L168 Benchmark]: Toolchain (without parser) took 1151.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:52,068 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:52,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:52,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.84 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 02:45:52,070 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:52,070 INFO L168 Benchmark]: RCFGBuilder took 499.46 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:52,071 INFO L168 Benchmark]: TraceAbstraction took 215.12 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:52,071 INFO L168 Benchmark]: Witness Printer took 39.28 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:52,074 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 947.5 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.84 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 16.68 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 499.46 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 215.12 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 39.28 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 35]: integer overflow possible integer overflow possible We found a FailurePath: [L25] int x = __VERIFIER_nondet_int(); [L26] int y = __VERIFIER_nondet_int(); [L27] int z = __VERIFIER_nondet_int(); [L33] int x = __VERIFIER_nondet_int(); [L34] COND TRUE x < 0 [L35] -x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 14 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...