./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-1.i --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_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum04-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/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 aeade23d65797ff650f62ff8e383f015764d9ed2 ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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 21:19:45,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:19:45,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:19:45,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:19:45,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:19:45,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:19:45,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:19:45,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:19:45,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:19:45,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:19:45,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:19:45,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:19:45,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:19:45,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:19:45,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:19:45,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:19:45,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:19:45,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:19:45,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:19:45,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:19:45,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:19:45,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:19:45,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:19:45,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:19:45,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:19:45,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:19:45,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:19:45,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:19:45,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:19:45,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:19:45,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:19:45,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:19:45,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:19:45,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:19:45,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:19:45,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:19:45,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:19:45,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:19:45,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:19:45,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:19:45,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:19:45,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:19:45,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:19:45,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:19:45,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:19:45,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:19:45,103 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:19:45,104 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:19:45,104 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:19:45,104 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:19:45,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:19:45,104 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:19:45,105 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:19:45,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:19:45,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:19:45,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:19:45,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:19:45,107 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_ce1ad299-208a-415e-b174-8ddfb69e8eab/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 -> aeade23d65797ff650f62ff8e383f015764d9ed2 [2019-12-07 21:19:45,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:19:45,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:19:45,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:19:45,221 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:19:45,221 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:19:45,222 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/../../sv-benchmarks/c/loops/sum04-1.i [2019-12-07 21:19:45,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/data/924470d3b/379343a60f3b47eda950b9a9149a2916/FLAGed5a70086 [2019-12-07 21:19:45,690 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:19:45,691 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/sv-benchmarks/c/loops/sum04-1.i [2019-12-07 21:19:45,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/data/924470d3b/379343a60f3b47eda950b9a9149a2916/FLAGed5a70086 [2019-12-07 21:19:45,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/data/924470d3b/379343a60f3b47eda950b9a9149a2916 [2019-12-07 21:19:45,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:19:45,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:19:45,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:45,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:19:45,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:19:45,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4562956c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45, skipping insertion in model container [2019-12-07 21:19:45,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:19:45,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:19:45,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:45,823 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:19:45,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:45,871 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:19:45,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45 WrapperNode [2019-12-07 21:19:45,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:45,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:19:45,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:19:45,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:19:45,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:19:45,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:19:45,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:19:45,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:19:45,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... [2019-12-07 21:19:45,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:19:45,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:19:45,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:19:45,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:19:45,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/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 21:19:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:19:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:19:46,054 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:19:46,055 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 21:19:46,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:46 BoogieIcfgContainer [2019-12-07 21:19:46,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:19:46,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:19:46,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:19:46,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:19:46,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:19:45" (1/3) ... [2019-12-07 21:19:46,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf3b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:19:46, skipping insertion in model container [2019-12-07 21:19:46,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:45" (2/3) ... [2019-12-07 21:19:46,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf3b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:19:46, skipping insertion in model container [2019-12-07 21:19:46,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:46" (3/3) ... [2019-12-07 21:19:46,060 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-12-07 21:19:46,066 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:19:46,070 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:19:46,077 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:19:46,091 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:19:46,092 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:19:46,092 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:19:46,092 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:19:46,092 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:19:46,092 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:19:46,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:19:46,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:19:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-12-07 21:19:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:19:46,104 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:46,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:19:46,104 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:46,108 INFO L82 PathProgramCache]: Analyzing trace with hash 988646, now seen corresponding path program 1 times [2019-12-07 21:19:46,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:19:46,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091584959] [2019-12-07 21:19:46,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:19:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:46,198 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 21:19:46,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091584959] [2019-12-07 21:19:46,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:46,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:19:46,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367698236] [2019-12-07 21:19:46,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:19:46,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:19:46,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:19:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:19:46,214 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-12-07 21:19:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:46,230 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-12-07 21:19:46,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:19:46,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 21:19:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:46,239 INFO L225 Difference]: With dead ends: 13 [2019-12-07 21:19:46,240 INFO L226 Difference]: Without dead ends: 6 [2019-12-07 21:19:46,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:19:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-12-07 21:19:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 21:19:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 21:19:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-12-07 21:19:46,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-12-07 21:19:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:46,264 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 21:19:46,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:19:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-12-07 21:19:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:19:46,264 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:46,264 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:19:46,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash 30749855, now seen corresponding path program 1 times [2019-12-07 21:19:46,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:19:46,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286517686] [2019-12-07 21:19:46,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:19:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286517686] [2019-12-07 21:19:46,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355304972] [2019-12-07 21:19:46,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/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 21:19:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:46,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:19:46,318 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,331 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1234525623] [2019-12-07 21:19:46,360 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-12-07 21:19:46,360 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:19:46,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:19:46,368 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:19:46,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:19:46,451 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:19:46,510 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:19:46,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 21:19:46,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-12-07 21:19:46,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287974206] [2019-12-07 21:19:46,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:19:46,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:19:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:19:46,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:19:46,513 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2019-12-07 21:19:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:46,526 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-12-07 21:19:46,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:19:46,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-12-07 21:19:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:46,527 INFO L225 Difference]: With dead ends: 12 [2019-12-07 21:19:46,527 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 21:19:46,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:19:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 21:19:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 21:19:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 21:19:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 21:19:46,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-12-07 21:19:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:46,530 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 21:19:46,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:19:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 21:19:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 21:19:46,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:46,531 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2019-12-07 21:19:46,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:19:46,732 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:46,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1342012454, now seen corresponding path program 2 times [2019-12-07 21:19:46,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:19:46,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054941367] [2019-12-07 21:19:46,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:19:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054941367] [2019-12-07 21:19:46,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54526109] [2019-12-07 21:19:46,792 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/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 21:19:46,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 21:19:46,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 21:19:46,811 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 21:19:46,811 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,815 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:46,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [520594110] [2019-12-07 21:19:46,846 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-12-07 21:19:46,847 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 21:19:46,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 21:19:46,847 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 21:19:46,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 21:19:46,884 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 21:19:46,935 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 21:19:46,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 21:19:46,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2019-12-07 21:19:46,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263859269] [2019-12-07 21:19:46,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 21:19:46,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:19:46,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 21:19:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:19:46,937 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-12-07 21:19:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:46,948 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-12-07 21:19:46,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 21:19:46,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-12-07 21:19:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:46,949 INFO L225 Difference]: With dead ends: 16 [2019-12-07 21:19:46,949 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 21:19:46,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:19:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 21:19:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 21:19:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 21:19:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 21:19:46,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-12-07 21:19:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:46,952 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 21:19:46,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 21:19:46,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 21:19:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 21:19:46,952 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:46,952 INFO L410 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2019-12-07 21:19:47,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:19:47,153 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1714503066, now seen corresponding path program 3 times [2019-12-07 21:19:47,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:19:47,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561066555] [2019-12-07 21:19:47,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:19:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:19:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:19:47,215 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:19:47,216 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:19:47,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:19:47 BoogieIcfgContainer [2019-12-07 21:19:47,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:19:47,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:19:47,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:19:47,229 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:19:47,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:46" (3/4) ... [2019-12-07 21:19:47,231 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:19:47,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ce1ad299-208a-415e-b174-8ddfb69e8eab/bin/utaipan/witness.graphml [2019-12-07 21:19:47,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:19:47,263 INFO L168 Benchmark]: Toolchain (without parser) took 1557.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 943.5 MB in the beginning and 974.4 MB in the end (delta: -30.8 MB). Peak memory consumption was 65.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:47,263 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:19:47,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:47,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.76 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 21:19:47,264 INFO L168 Benchmark]: Boogie Preprocessor took 11.22 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 21:19:47,265 INFO L168 Benchmark]: RCFGBuilder took 152.54 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:47,265 INFO L168 Benchmark]: TraceAbstraction took 1172.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 979.7 MB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:47,265 INFO L168 Benchmark]: Witness Printer took 33.17 ms. Allocated memory is still 1.1 GB. Free memory was 979.7 MB in the beginning and 974.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:47,268 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.76 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 11.22 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. * RCFGBuilder took 152.54 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1172.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 979.7 MB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. * Witness Printer took 33.17 ms. Allocated memory is still 1.1 GB. Free memory was 979.7 MB in the beginning and 974.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, sn=0; [L13] i=1 [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND FALSE !(i<=8) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 8, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 468 SizeOfPredicates, 2 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...