./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s4iff.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_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s4iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 aa2dda5680f87372970e50da43a1e6c1a86bd9e2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:13:35,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:13:35,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:13:35,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:13:35,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:13:35,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:13:35,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:13:35,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:13:35,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:13:35,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:13:35,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:13:35,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:13:35,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:13:35,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:13:35,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:13:35,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:13:35,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:13:35,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:13:35,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:13:35,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:13:35,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:13:35,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:13:35,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:13:35,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:13:35,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:13:35,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:13:35,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:13:35,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:13:35,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:13:35,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:13:35,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:13:35,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:13:35,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:13:35,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:13:35,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:13:35,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:13:35,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:13:35,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:13:35,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:13:35,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:13:35,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:13:35,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:13:35,974 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:13:35,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:13:35,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:13:35,975 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:13:35,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:13:35,975 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:13:35,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:13:35,976 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:13:35,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:13:35,976 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:13:35,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:13:35,977 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:13:35,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:13:35,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:13:35,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:13:35,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:13:35,978 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:13:35,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:13:35,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:13:35,979 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:13:35,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:13:35,980 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:13:35,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:13:35,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:13:35,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:13:35,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:13:35,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:13:35,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:13:35,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:13:35,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:13:35,981 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:13:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:13:35,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:13:35,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:13:35,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:13:35,982 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_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 -> aa2dda5680f87372970e50da43a1e6c1a86bd9e2 [2019-12-07 20:13:36,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:13:36,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:13:36,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:13:36,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:13:36,096 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:13:36,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/../../sv-benchmarks/c/array-fpi/s4iff.c [2019-12-07 20:13:36,132 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/data/1ddfecd78/e239a92b323e4724a4315c0abea15665/FLAG2393c03e3 [2019-12-07 20:13:36,528 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:13:36,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/sv-benchmarks/c/array-fpi/s4iff.c [2019-12-07 20:13:36,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/data/1ddfecd78/e239a92b323e4724a4315c0abea15665/FLAG2393c03e3 [2019-12-07 20:13:36,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/data/1ddfecd78/e239a92b323e4724a4315c0abea15665 [2019-12-07 20:13:36,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:13:36,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:13:36,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:36,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:13:36,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:13:36,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,549 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 08:13:36, skipping insertion in model container [2019-12-07 20:13:36,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:13:36,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:13:36,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:36,714 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:13:36,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:36,737 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:13:36,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36 WrapperNode [2019-12-07 20:13:36,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:36,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:36,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:13:36,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:13:36,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:36,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:13:36,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:13:36,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:13:36,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... [2019-12-07 20:13:36,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:13:36,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:13:36,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:13:36,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:13:36,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:13:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:13:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:13:37,008 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:13:37,009 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 20:13:37,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:37 BoogieIcfgContainer [2019-12-07 20:13:37,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:13:37,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:13:37,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:13:37,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:13:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:13:36" (1/3) ... [2019-12-07 20:13:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5ce3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:37, skipping insertion in model container [2019-12-07 20:13:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:36" (2/3) ... [2019-12-07 20:13:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5ce3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:37, skipping insertion in model container [2019-12-07 20:13:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:37" (3/3) ... [2019-12-07 20:13:37,014 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2019-12-07 20:13:37,021 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:13:37,025 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:13:37,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:13:37,048 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:13:37,048 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:13:37,048 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:13:37,048 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:13:37,048 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:13:37,048 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:13:37,048 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:13:37,048 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:13:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 20:13:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 20:13:37,061 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:37,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 20:13:37,061 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:37,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1853087982, now seen corresponding path program 1 times [2019-12-07 20:13:37,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:37,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701213684] [2019-12-07 20:13:37,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:37,180 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 20:13:37,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701213684] [2019-12-07 20:13:37,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:37,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:13:37,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598188401] [2019-12-07 20:13:37,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:13:37,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:13:37,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:13:37,195 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-12-07 20:13:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:37,218 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-12-07 20:13:37,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:13:37,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 20:13:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:37,226 INFO L225 Difference]: With dead ends: 18 [2019-12-07 20:13:37,226 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 20:13:37,228 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 20:13:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 20:13:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 20:13:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 20:13:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-12-07 20:13:37,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-12-07 20:13:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:37,249 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 20:13:37,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:13:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-12-07 20:13:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 20:13:37,249 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:37,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:37,250 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:37,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1617540378, now seen corresponding path program 1 times [2019-12-07 20:13:37,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:37,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82912366] [2019-12-07 20:13:37,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:37,287 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 20:13:37,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82912366] [2019-12-07 20:13:37,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:37,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:13:37,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530503515] [2019-12-07 20:13:37,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:13:37,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:37,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:13:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:13:37,290 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-12-07 20:13:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:37,309 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-07 20:13:37,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:13:37,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 20:13:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:37,310 INFO L225 Difference]: With dead ends: 12 [2019-12-07 20:13:37,310 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 20:13:37,311 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 20:13:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 20:13:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 20:13:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 20:13:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-12-07 20:13:37,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2019-12-07 20:13:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:37,313 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 20:13:37,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:13:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-12-07 20:13:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:13:37,314 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:37,314 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:37,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1395813533, now seen corresponding path program 1 times [2019-12-07 20:13:37,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:37,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081477270] [2019-12-07 20:13:37,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:37,327 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 20:13:37,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882171322] [2019-12-07 20:13:37,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 20:13:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:37,361 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 20:13:37,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:13:37,402 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 20:13:37,402 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:13:37,412 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:13:37,418 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 20:13:37,419 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 20:13:37,426 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:13:37,427 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 20:13:37,427 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-12-07 20:13:37,445 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 20:13:37,446 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:13:37,455 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:13:37,455 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:13:37,456 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-12-07 20:13:37,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:13:37,500 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 20:13:37,501 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:13:37,509 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:13:37,510 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 20:13:37,511 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:31 [2019-12-07 20:13:37,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:13:37,546 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 20:13:37,546 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:13:37,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:13:39,707 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 42 [2019-12-07 20:13:39,712 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 20:13:39,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081477270] [2019-12-07 20:13:39,712 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:13:39,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882171322] [2019-12-07 20:13:39,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715003835] [2019-12-07 20:13:39,727 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 20:13:39,727 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:13:39,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:13:39,735 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:13:39,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:13:42,091 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:13:42,208 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:13:42,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 20:13:42,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-12-07 20:13:42,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742529627] [2019-12-07 20:13:42,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 20:13:42,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:42,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 20:13:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-12-07 20:13:42,210 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 12 states. [2019-12-07 20:13:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:42,297 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 20:13:42,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:13:42,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-12-07 20:13:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:42,298 INFO L225 Difference]: With dead ends: 15 [2019-12-07 20:13:42,298 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 20:13:42,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-12-07 20:13:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 20:13:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-12-07 20:13:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 20:13:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-12-07 20:13:42,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-12-07 20:13:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:42,301 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 20:13:42,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 20:13:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-12-07 20:13:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:13:42,301 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:42,301 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:42,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:13:42,502 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash 123794289, now seen corresponding path program 2 times [2019-12-07 20:13:42,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:42,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196033959] [2019-12-07 20:13:42,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:42,516 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 20:13:42,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178870958] [2019-12-07 20:13:42,517 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 20:13:42,569 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 20:13:42,569 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:13:42,570 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:13:42,572 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:13:42,595 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 20:13:42,596 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:13:42,617 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 20:13:42,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196033959] [2019-12-07 20:13:42,617 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:13:42,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178870958] [2019-12-07 20:13:42,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134685340] [2019-12-07 20:13:42,618 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 20:13:42,618 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:13:42,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:13:42,619 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:13:42,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:13:50,239 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select v_prenex_12 |ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset|) (select (select v_prenex_12 ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset (* ULTIMATE.start_main_~i~0 4) (- 8)))) [2019-12-07 20:13:52,427 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 .cse0 (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 4))))) [2019-12-07 20:13:54,877 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 (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 20:13:56,879 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 20:14:00,427 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:14:00,506 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:14:00,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 20:14:00,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 20:14:00,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152580322] [2019-12-07 20:14:00,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 20:14:00,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:14:00,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 20:14:00,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-12-07 20:14:00,507 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 9 states. [2019-12-07 20:14:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:14:00,568 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-12-07 20:14:00,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:14:00,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2019-12-07 20:14:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:14:00,569 INFO L225 Difference]: With dead ends: 16 [2019-12-07 20:14:00,569 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 20:14:00,569 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 20:14:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 20:14:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-12-07 20:14:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 20:14:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 20:14:00,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2019-12-07 20:14:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:14:00,571 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 20:14:00,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 20:14:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 20:14:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:14:00,572 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:14:00,572 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:14:00,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:14:00,773 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:14:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:14:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash 320504262, now seen corresponding path program 3 times [2019-12-07 20:14:00,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:14:00,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570868175] [2019-12-07 20:14:00,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:14:00,784 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 20:14:00,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5597616] [2019-12-07 20:14:00,785 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 20:14:00,831 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 20:14:00,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:14:00,832 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:14:00,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:14:00,848 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 20:14:00,848 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:14:00,862 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 20:14:00,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570868175] [2019-12-07 20:14:00,863 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:14:00,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5597616] [2019-12-07 20:14:00,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900369685] [2019-12-07 20:14:00,864 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 20:14:00,864 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:14:00,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:14:00,864 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:14:00,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:14:04,226 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)) ULTIMATE.start_main_~a~0.offset) [2019-12-07 20:14:06,418 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:14:06,496 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:14:06,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 20:14:06,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-12-07 20:14:06,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479120184] [2019-12-07 20:14:06,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:14:06,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:14:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:14:06,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-07 20:14:06,497 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 8 states. [2019-12-07 20:14:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:14:06,526 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-12-07 20:14:06,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:14:06,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-12-07 20:14:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:14:06,527 INFO L225 Difference]: With dead ends: 17 [2019-12-07 20:14:06,527 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 20:14:06,527 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 20:14:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 20:14:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 20:14:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 20:14:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-12-07 20:14:06,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2019-12-07 20:14:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:14:06,530 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 20:14:06,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:14:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-12-07 20:14:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:14:06,530 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:14:06,530 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 20:14:06,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:14:06,731 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:14:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:14:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash -457386638, now seen corresponding path program 4 times [2019-12-07 20:14:06,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:14:06,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541783385] [2019-12-07 20:14:06,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:14:06,742 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 20:14:06,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372539556] [2019-12-07 20:14:06,742 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/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 20:14:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:14:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:14:06,817 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:14:06,817 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:14:07,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:14:07,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:14:07 BoogieIcfgContainer [2019-12-07 20:14:07,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:14:07,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:14:07,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:14:07,056 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:14:07,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:37" (3/4) ... [2019-12-07 20:14:07,058 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:14:07,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd2d6e91-8b16-4531-8a78-19f407d1169c/bin/utaipan/witness.graphml [2019-12-07 20:14:07,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:14:07,091 INFO L168 Benchmark]: Toolchain (without parser) took 30547.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -102.0 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:14:07,092 INFO L168 Benchmark]: CDTParser took 0.13 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 20:14:07,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:14:07,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.20 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 20:14:07,092 INFO L168 Benchmark]: Boogie Preprocessor took 17.34 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 20:14:07,093 INFO L168 Benchmark]: RCFGBuilder took 229.28 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 20:14:07,093 INFO L168 Benchmark]: TraceAbstraction took 30045.18 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:14:07,093 INFO L168 Benchmark]: Witness Printer took 34.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:14:07,095 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 193.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.20 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 17.34 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 229.28 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 30045.18 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 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