./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3iff.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_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s3iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/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 c931059f8de62343b75e0a40b805bb4dbf7de2b8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 14:55:30,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:55:30,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:55:31,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:55:31,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:55:31,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:55:31,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:55:31,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:55:31,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:55:31,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:55:31,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:55:31,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:55:31,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:55:31,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:55:31,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:55:31,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:55:31,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:55:31,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:55:31,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:55:31,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:55:31,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:55:31,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:55:31,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:55:31,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:55:31,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:55:31,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:55:31,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:55:31,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:55:31,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:55:31,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:55:31,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:55:31,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:55:31,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:55:31,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:55:31,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:55:31,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:55:31,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:55:31,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:55:31,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:55:31,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:55:31,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:55:31,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:55:31,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:55:31,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:55:31,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:55:31,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:55:31,034 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:55:31,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:55:31,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:55:31,035 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:55:31,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:55:31,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:55:31,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:55:31,036 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:55:31,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:55:31,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:55:31,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:55:31,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:55:31,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:55:31,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:55:31,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:55:31,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:55:31,038 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_ce8f5106-18bc-4131-955c-632284972df1/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 -> c931059f8de62343b75e0a40b805bb4dbf7de2b8 [2019-12-07 14:55:31,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:55:31,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:55:31,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:55:31,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:55:31,152 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:55:31,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/../../sv-benchmarks/c/array-fpi/s3iff.c [2019-12-07 14:55:31,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/data/669d7a503/7be0a177f7774053b6e273f8ba67e794/FLAGfb68f0e6f [2019-12-07 14:55:31,612 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:55:31,612 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/sv-benchmarks/c/array-fpi/s3iff.c [2019-12-07 14:55:31,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/data/669d7a503/7be0a177f7774053b6e273f8ba67e794/FLAGfb68f0e6f [2019-12-07 14:55:31,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/data/669d7a503/7be0a177f7774053b6e273f8ba67e794 [2019-12-07 14:55:31,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:55:31,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:55:31,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:55:31,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:55:31,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:55:31,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770086bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31, skipping insertion in model container [2019-12-07 14:55:31,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:55:31,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:55:31,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:55:31,790 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:55:31,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:55:31,815 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:55:31,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31 WrapperNode [2019-12-07 14:55:31,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:55:31,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:55:31,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:55:31,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:55:31,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:55:31,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:55:31,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:55:31,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:55:31,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... [2019-12-07 14:55:31,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:55:31,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:55:31,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:55:31,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:55:31,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/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 14:55:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:55:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:55:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 14:55:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:55:31,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:55:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:55:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:55:32,085 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:55:32,085 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 14:55:32,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:55:32 BoogieIcfgContainer [2019-12-07 14:55:32,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:55:32,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:55:32,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:55:32,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:55:32,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:55:31" (1/3) ... [2019-12-07 14:55:32,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacefb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:55:32, skipping insertion in model container [2019-12-07 14:55:32,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:55:31" (2/3) ... [2019-12-07 14:55:32,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacefb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:55:32, skipping insertion in model container [2019-12-07 14:55:32,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:55:32" (3/3) ... [2019-12-07 14:55:32,091 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2019-12-07 14:55:32,098 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:55:32,102 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:55:32,110 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:55:32,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:55:32,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:55:32,126 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:55:32,126 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:55:32,126 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:55:32,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:55:32,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:55:32,126 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:55:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 14:55:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:55:32,138 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:55:32,139 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:55:32,139 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:55:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:55:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1853087982, now seen corresponding path program 1 times [2019-12-07 14:55:32,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:55:32,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466760105] [2019-12-07 14:55:32,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:55:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:55:32,257 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 14:55:32,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466760105] [2019-12-07 14:55:32,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:55:32,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:55:32,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450638912] [2019-12-07 14:55:32,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:55:32,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:55:32,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:55:32,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:55:32,272 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-12-07 14:55:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:55:32,295 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-12-07 14:55:32,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:55:32,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 14:55:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:55:32,302 INFO L225 Difference]: With dead ends: 18 [2019-12-07 14:55:32,302 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 14:55:32,304 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 14:55:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 14:55:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 14:55:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 14:55:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-12-07 14:55:32,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-12-07 14:55:32,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:55:32,325 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 14:55:32,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:55:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-12-07 14:55:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:55:32,326 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:55:32,326 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:55:32,326 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:55:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:55:32,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1617540378, now seen corresponding path program 1 times [2019-12-07 14:55:32,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:55:32,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711589826] [2019-12-07 14:55:32,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:55:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:55:32,360 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 14:55:32,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711589826] [2019-12-07 14:55:32,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:55:32,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:55:32,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300941589] [2019-12-07 14:55:32,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:55:32,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:55:32,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:55:32,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:55:32,362 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-12-07 14:55:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:55:32,379 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-07 14:55:32,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:55:32,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 14:55:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:55:32,380 INFO L225 Difference]: With dead ends: 12 [2019-12-07 14:55:32,380 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 14:55:32,381 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:55:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 14:55:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 14:55:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:55:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-12-07 14:55:32,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2019-12-07 14:55:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:55:32,384 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 14:55:32,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:55:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-12-07 14:55:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:55:32,384 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:55:32,384 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:55:32,385 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:55:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:55:32,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1395813533, now seen corresponding path program 1 times [2019-12-07 14:55:32,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:55:32,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747075980] [2019-12-07 14:55:32,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:55:32,396 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:55:32,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873451322] [2019-12-07 14:55:32,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/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 14:55:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:55:32,433 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 14:55:32,438 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:55:32,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-12-07 14:55:32,480 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,490 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 14:55:32,495 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 14:55:32,495 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,503 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 14:55:32,503 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,503 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-12-07 14:55:32,518 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-12-07 14:55:32,519 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,527 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 14:55:32,527 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,528 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-12-07 14:55:32,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:55:32,577 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2019-12-07 14:55:32,578 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 14:55:32,586 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 14:55:32,587 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 14:55:32,587 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:31 [2019-12-07 14:55:32,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:55:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:32,622 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:55:32,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:55:36,797 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 42 [2019-12-07 14:55:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:36,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747075980] [2019-12-07 14:55:36,802 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:55:36,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873451322] [2019-12-07 14:55:36,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989686813] [2019-12-07 14:55:36,817 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 14:55:36,817 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:55:36,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:55:36,825 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:55:36,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:55:42,614 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)) 0) [2019-12-07 14:55:42,712 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:55:42,828 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:55:42,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:55:42,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-12-07 14:55:42,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898805807] [2019-12-07 14:55:42,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 14:55:42,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:55:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 14:55:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=199, Unknown=1, NotChecked=0, Total=240 [2019-12-07 14:55:42,830 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 12 states. [2019-12-07 14:55:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:55:42,918 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 14:55:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:55:42,919 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-12-07 14:55:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:55:42,919 INFO L225 Difference]: With dead ends: 15 [2019-12-07 14:55:42,919 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 14:55:42,920 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2019-12-07 14:55:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 14:55:42,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-12-07 14:55:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 14:55:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-12-07 14:55:42,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-12-07 14:55:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:55:42,923 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 14:55:42,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 14:55:42,923 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-12-07 14:55:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:55:42,923 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:55:42,924 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:55:43,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:55:43,124 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:55:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:55:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash 123794289, now seen corresponding path program 2 times [2019-12-07 14:55:43,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:55:43,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118357619] [2019-12-07 14:55:43,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:55:43,139 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:55:43,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527454372] [2019-12-07 14:55:43,139 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/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 14:55:43,183 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 14:55:43,183 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:55:43,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:55:43,186 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:55:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:43,221 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:55:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:43,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118357619] [2019-12-07 14:55:43,248 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:55:43,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527454372] [2019-12-07 14:55:43,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506922496] [2019-12-07 14:55:43,249 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 14:55:43,250 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:55:43,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:55:43,250 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:55:43,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:55:49,620 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select v_prenex_12 ULTIMATE.start_main_~a~0.base)) (.cse1 (* ULTIMATE.start_main_~i~0 4))) (= (select .cse0 (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 4))))) [2019-12-07 14:55:52,716 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select v_prenex_12 ULTIMATE.start_main_~a~0.base)) (.cse1 (* ULTIMATE.start_main_~i~0 4))) (= (select .cse0 (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (+ (select (select v_prenex_12 |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|) (select .cse0 (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 4)))))) [2019-12-07 14:55:53,817 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:55:53,899 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:55:53,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:55:53,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 14:55:53,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808148762] [2019-12-07 14:55:53,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:55:53,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:55:53,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:55:53,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:55:53,900 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 9 states. [2019-12-07 14:55:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:55:53,965 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-12-07 14:55:53,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:55:53,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2019-12-07 14:55:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:55:53,966 INFO L225 Difference]: With dead ends: 16 [2019-12-07 14:55:53,966 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 14:55:53,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2019-12-07 14:55:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 14:55:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-12-07 14:55:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 14:55:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 14:55:53,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2019-12-07 14:55:53,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:55:53,969 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 14:55:53,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:55:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 14:55:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:55:53,970 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:55:53,970 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:55:54,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:55:54,171 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:55:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:55:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash 320504262, now seen corresponding path program 3 times [2019-12-07 14:55:54,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:55:54,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959861622] [2019-12-07 14:55:54,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:55:54,176 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:55:54,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062252990] [2019-12-07 14:55:54,177 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:55:54,213 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 14:55:54,213 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:55:54,214 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:55:54,214 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:55:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:54,233 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:55:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:55:54,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959861622] [2019-12-07 14:55:54,249 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:55:54,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062252990] [2019-12-07 14:55:54,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193399087] [2019-12-07 14:55:54,250 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 14:55:54,250 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:55:54,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:55:54,251 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:55:54,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:55:59,795 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_58| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4))) (select (select |v_#memory_int_58| |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|)) [2019-12-07 14:56:01,797 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_58| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4))) (select (select |v_#memory_int_58| |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|)) [2019-12-07 14:56:04,167 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select (select |v_#memory_int_58| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4))))) (= .cse0 (+ (select (select |v_#memory_int_58| |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|) .cse0))) [2019-12-07 14:56:06,179 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select (select |v_#memory_int_58| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4))))) (= .cse0 (+ (select (select |v_#memory_int_58| |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|) .cse0))) [2019-12-07 14:56:10,108 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select (select |v_#memory_int_58| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4))))) (= .cse0 (+ (select (select |v_#memory_int_58| |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|) .cse0))) [2019-12-07 14:56:13,170 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:56:13,251 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:56:13,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:56:13,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-12-07 14:56:13,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276710410] [2019-12-07 14:56:13,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:56:13,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:56:13,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:56:13,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:56:13,252 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 8 states. [2019-12-07 14:56:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:56:13,283 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-12-07 14:56:13,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:56:13,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-12-07 14:56:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:56:13,284 INFO L225 Difference]: With dead ends: 17 [2019-12-07 14:56:13,284 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 14:56:13,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-12-07 14:56:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 14:56:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 14:56:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 14:56:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-12-07 14:56:13,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2019-12-07 14:56:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:56:13,287 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 14:56:13,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:56:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-12-07 14:56:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:56:13,287 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:56:13,287 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:56:13,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:56:13,488 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:56:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:56:13,488 INFO L82 PathProgramCache]: Analyzing trace with hash -457386638, now seen corresponding path program 4 times [2019-12-07 14:56:13,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:56:13,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731027202] [2019-12-07 14:56:13,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:56:13,496 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 14:56:13,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63644193] [2019-12-07 14:56:13,496 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:56:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:56:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:56:13,560 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:56:13,560 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:56:13,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:56:13,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:56:13 BoogieIcfgContainer [2019-12-07 14:56:13,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:56:13,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:56:13,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:56:13,800 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:56:13,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:55:32" (3/4) ... [2019-12-07 14:56:13,802 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:56:13,835 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce8f5106-18bc-4131-955c-632284972df1/bin/utaipan/witness.graphml [2019-12-07 14:56:13,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:56:13,836 INFO L168 Benchmark]: Toolchain (without parser) took 42208.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 939.9 MB in the beginning and 1.0 GB in the end (delta: -102.5 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:56:13,836 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:56:13,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -179.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:56:13,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.78 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. [2019-12-07 14:56:13,837 INFO L168 Benchmark]: Boogie Preprocessor took 17.15 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. [2019-12-07 14:56:13,837 INFO L168 Benchmark]: RCFGBuilder took 228.93 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:56:13,838 INFO L168 Benchmark]: TraceAbstraction took 41712.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:56:13,838 INFO L168 Benchmark]: Witness Printer took 35.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:56:13,840 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 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -179.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.78 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 17.15 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. * RCFGBuilder took 228.93 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 41712.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 11.5 GB. * Witness Printer took 35.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 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 sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 1 [L27] i=0 VAL [N=2] [L27] COND TRUE i