./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/indp2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/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 37771e8101f66ae79c714b2af4df2fa3ab037870 ................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 15:58:58,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:58:58,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:58:58,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:58:58,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:58:58,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:58:58,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:58:58,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:58:58,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:58:58,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:58:58,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:58:58,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:58:58,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:58:58,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:58:58,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:58:58,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:58:58,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:58:58,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:58:58,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:58:58,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:58:58,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:58:58,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:58:58,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:58:58,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:58:58,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:58:58,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:58:58,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:58:58,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:58:58,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:58:58,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:58:58,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:58:58,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:58:58,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:58:58,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:58:58,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:58:58,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:58:58,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:58:58,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:58:58,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:58:58,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:58:58,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:58:58,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:58:58,979 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:58:58,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:58:58,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:58:58,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:58:58,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:58:58,981 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:58:58,981 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:58:58,981 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:58:58,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:58:58,981 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:58:58,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:58:58,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:58:58,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:58:58,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:58:58,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:58:58,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:58:58,984 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_99f518ea-1dc6-421e-af06-42bdbc101113/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 -> 37771e8101f66ae79c714b2af4df2fa3ab037870 [2019-12-07 15:58:59,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:58:59,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:58:59,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:58:59,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:58:59,095 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:58:59,095 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/../../sv-benchmarks/c/array-fpi/indp2f.c [2019-12-07 15:58:59,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/data/e7474e654/42e15aad371747a79a4e3666ea112817/FLAGebe110490 [2019-12-07 15:58:59,610 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:58:59,611 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/sv-benchmarks/c/array-fpi/indp2f.c [2019-12-07 15:58:59,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/data/e7474e654/42e15aad371747a79a4e3666ea112817/FLAGebe110490 [2019-12-07 15:58:59,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/data/e7474e654/42e15aad371747a79a4e3666ea112817 [2019-12-07 15:58:59,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:58:59,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:58:59,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:58:59,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:58:59,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:58:59,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2516fdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59, skipping insertion in model container [2019-12-07 15:58:59,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:58:59,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:58:59,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:58:59,802 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:58:59,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:58:59,823 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:58:59,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59 WrapperNode [2019-12-07 15:58:59,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:58:59,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:58:59,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:58:59,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:58:59,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:58:59,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:58:59,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:58:59,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:58:59,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... [2019-12-07 15:58:59,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:58:59,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:58:59,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:58:59,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:58:59,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/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 [2019-12-07 15:58:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:58:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 15:58:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:58:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:58:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:59:00,120 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:59:00,120 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 15:59:00,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:59:00 BoogieIcfgContainer [2019-12-07 15:59:00,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:59:00,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:59:00,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:59:00,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:59:00,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:58:59" (1/3) ... [2019-12-07 15:59:00,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:59:00, skipping insertion in model container [2019-12-07 15:59:00,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:59" (2/3) ... [2019-12-07 15:59:00,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:59:00, skipping insertion in model container [2019-12-07 15:59:00,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:59:00" (3/3) ... [2019-12-07 15:59:00,127 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2019-12-07 15:59:00,133 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:59:00,137 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:59:00,144 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:59:00,159 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:59:00,159 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:59:00,159 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:59:00,159 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:59:00,159 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:59:00,159 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:59:00,159 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:59:00,159 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:59:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-12-07 15:59:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:59:00,172 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:59:00,172 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:59:00,173 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:59:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:59:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -471941506, now seen corresponding path program 1 times [2019-12-07 15:59:00,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:59:00,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205758514] [2019-12-07 15:59:00,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:59:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:59:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:59:00,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205758514] [2019-12-07 15:59:00,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:59:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:59:00,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357060219] [2019-12-07 15:59:00,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:59:00,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:59:00,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:59:00,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:59:00,317 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-12-07 15:59:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:59:00,345 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2019-12-07 15:59:00,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:59:00,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 15:59:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:59:00,352 INFO L225 Difference]: With dead ends: 22 [2019-12-07 15:59:00,353 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 15:59:00,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:59:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 15:59:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 15:59:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:59:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-12-07 15:59:00,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2019-12-07 15:59:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:59:00,376 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 15:59:00,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:59:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2019-12-07 15:59:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:59:00,376 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:59:00,376 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:59:00,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:59:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:59:00,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1082916935, now seen corresponding path program 1 times [2019-12-07 15:59:00,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:59:00,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133849385] [2019-12-07 15:59:00,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:59:00,385 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:59:00,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861514616] [2019-12-07 15:59:00,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/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 [2019-12-07 15:59:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:59:00,416 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:59:00,419 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:59:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:59:00,439 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:59:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:59:00,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133849385] [2019-12-07 15:59:00,450 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:59:00,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861514616] [2019-12-07 15:59:00,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:59:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-12-07 15:59:00,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409639059] [2019-12-07 15:59:00,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:59:00,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:59:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:59:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:59:00,452 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 5 states. [2019-12-07 15:59:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:59:00,495 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-12-07 15:59:00,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:59:00,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 15:59:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:59:00,496 INFO L225 Difference]: With dead ends: 24 [2019-12-07 15:59:00,496 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:59:00,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:59:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:59:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2019-12-07 15:59:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:59:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-12-07 15:59:00,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2019-12-07 15:59:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:59:00,500 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-12-07 15:59:00,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:59:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-12-07 15:59:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:59:00,500 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:59:00,500 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:59:00,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:59:00,702 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:59:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:59:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash 267163688, now seen corresponding path program 1 times [2019-12-07 15:59:00,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:59:00,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630176898] [2019-12-07 15:59:00,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:59:00,725 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:59:00,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462902593] [2019-12-07 15:59:00,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:59:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:59:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:59:00,795 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:59:00,795 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:59:00,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:59:01,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:59:01 BoogieIcfgContainer [2019-12-07 15:59:01,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:59:01,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:59:01,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:59:01,025 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:59:01,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:59:00" (3/4) ... [2019-12-07 15:59:01,026 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:59:01,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99f518ea-1dc6-421e-af06-42bdbc101113/bin/utaipan/witness.graphml [2019-12-07 15:59:01,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:59:01,058 INFO L168 Benchmark]: Toolchain (without parser) took 1431.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -72.8 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:59:01,059 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:59:01,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:59:01,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:59:01,060 INFO L168 Benchmark]: Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.1 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. [2019-12-07 15:59:01,060 INFO L168 Benchmark]: RCFGBuilder took 257.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:59:01,060 INFO L168 Benchmark]: TraceAbstraction took 901.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:59:01,061 INFO L168 Benchmark]: Witness Printer took 32.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:59:01,063 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 196.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.1 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. * RCFGBuilder took 257.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 901.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. * Witness Printer took 32.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 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); [L25] i=0 VAL [N=1] [L25] COND TRUE i