./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sumt4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sumt4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 ebfe90b23c5010baeb89836ab01df4fae83e4e4f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:25,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:25,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:25,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:25,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:25,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:25,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:25,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:25,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:25,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:25,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:25,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:25,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:25,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:25,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:25,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:25,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:25,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:25,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:25,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:25,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:25,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:25,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:25,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:25,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:25,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:25,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:25,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:25,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:25,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:25,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:25,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:25,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:25,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:25,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:25,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:25,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:25,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:25,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:25,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:25,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:25,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:25,959 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:25,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:25,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:25,961 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:25,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:25,961 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:25,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:25,961 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:25,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:25,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:25,962 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:25,962 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:25,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:25,963 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:25,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:25,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:25,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:25,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:25,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:25,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:25,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:25,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:25,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:25,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:25,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:25,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:25,970 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:25,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:25,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:25,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:25,971 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/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 -> ebfe90b23c5010baeb89836ab01df4fae83e4e4f [2019-10-22 11:24:26,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:26,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:26,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:26,035 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:26,035 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:26,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/sumt4.c [2019-10-22 11:24:26,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/data/52311f759/491ce5db7ed8442e98fbd73525240134/FLAG3189e3770 [2019-10-22 11:24:26,478 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:26,479 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/sv-benchmarks/c/loops-crafted-1/sumt4.c [2019-10-22 11:24:26,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/data/52311f759/491ce5db7ed8442e98fbd73525240134/FLAG3189e3770 [2019-10-22 11:24:26,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/data/52311f759/491ce5db7ed8442e98fbd73525240134 [2019-10-22 11:24:26,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:26,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:26,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:26,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:26,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:26,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:26" (1/1) ... [2019-10-22 11:24:26,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5390f377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:26, skipping insertion in model container [2019-10-22 11:24:26,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:26" (1/1) ... [2019-10-22 11:24:26,911 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:26,924 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:27,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:27,056 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:27,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:27,149 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:27,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27 WrapperNode [2019-10-22 11:24:27,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:27,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:27,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:27,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:27,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:27,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:27,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:27,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:27,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... [2019-10-22 11:24:27,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:27,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:27,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:27,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:27,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 [2019-10-22 11:24:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:27,409 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:27,409 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:24:27,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:27 BoogieIcfgContainer [2019-10-22 11:24:27,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:27,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:27,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:27,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:27,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:26" (1/3) ... [2019-10-22 11:24:27,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:27, skipping insertion in model container [2019-10-22 11:24:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:27" (2/3) ... [2019-10-22 11:24:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:27, skipping insertion in model container [2019-10-22 11:24:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:27" (3/3) ... [2019-10-22 11:24:27,419 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2019-10-22 11:24:27,429 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:27,436 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:27,448 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:27,469 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:27,469 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:27,469 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:27,469 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:27,469 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:27,470 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:27,470 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:27,470 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:24:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:27,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:27,492 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:27,507 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1807612808, now seen corresponding path program 1 times [2019-10-22 11:24:27,522 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:27,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754005686] [2019-10-22 11:24:27,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:27,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:27,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:27,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754005686] [2019-10-22 11:24:27,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:27,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:27,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056143909] [2019-10-22 11:24:27,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:27,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:27,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:27,649 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-10-22 11:24:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:27,672 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-10-22 11:24:27,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:27,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-10-22 11:24:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:27,690 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:24:27,690 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:24:27,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:24:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 11:24:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:24:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-10-22 11:24:27,732 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-10-22 11:24:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:27,732 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-10-22 11:24:27,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-10-22 11:24:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:24:27,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:27,733 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:27,734 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:27,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1806987197, now seen corresponding path program 1 times [2019-10-22 11:24:27,737 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:27,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607965816] [2019-10-22 11:24:27,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:27,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:27,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:28,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607965816] [2019-10-22 11:24:28,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:28,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:28,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923327122] [2019-10-22 11:24:28,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:28,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:28,101 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 5 states. [2019-10-22 11:24:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:30,249 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2019-10-22 11:24:30,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:30,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 11:24:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:30,251 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:24:30,252 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 11:24:30,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 11:24:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-10-22 11:24:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:24:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-10-22 11:24:30,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-10-22 11:24:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:30,258 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 11:24:30,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-10-22 11:24:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:24:30,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:30,260 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:30,260 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash 87918451, now seen corresponding path program 1 times [2019-10-22 11:24:30,261 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:30,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845637161] [2019-10-22 11:24:30,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:30,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:30,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:30,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845637161] [2019-10-22 11:24:30,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041945576] [2019-10-22 11:24:30,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 [2019-10-22 11:24:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:30,692 WARN L254 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-22 11:24:30,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:30,797 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:24:31,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:24:31,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 14 [2019-10-22 11:24:31,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480813955] [2019-10-22 11:24:31,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:31,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:24:31,092 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 5 states. [2019-10-22 11:24:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:35,409 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-10-22 11:24:35,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:35,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 11:24:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:35,411 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:24:35,411 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 11:24:35,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:24:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 11:24:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-22 11:24:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 11:24:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-10-22 11:24:35,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2019-10-22 11:24:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:35,417 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-10-22 11:24:35,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-10-22 11:24:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:24:35,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:35,417 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:35,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:35,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:35,619 INFO L82 PathProgramCache]: Analyzing trace with hash -35291509, now seen corresponding path program 1 times [2019-10-22 11:24:35,619 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:35,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699776888] [2019-10-22 11:24:35,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:35,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:35,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699776888] [2019-10-22 11:24:35,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:35,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:35,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332490572] [2019-10-22 11:24:35,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:35,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:35,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:35,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:35,761 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2019-10-22 11:24:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:37,814 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-10-22 11:24:37,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:37,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-22 11:24:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:37,816 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:24:37,816 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 11:24:37,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 11:24:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-10-22 11:24:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:24:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-10-22 11:24:37,820 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-10-22 11:24:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:37,821 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-10-22 11:24:37,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-10-22 11:24:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:24:37,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:37,822 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:37,822 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash -116405439, now seen corresponding path program 1 times [2019-10-22 11:24:37,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:37,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152684832] [2019-10-22 11:24:37,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:37,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:37,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:38,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152684832] [2019-10-22 11:24:38,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370744564] [2019-10-22 11:24:38,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 [2019-10-22 11:24:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:38,271 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-22 11:24:38,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:38,474 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:38,666 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:24:38,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 16 [2019-10-22 11:24:38,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120086936] [2019-10-22 11:24:38,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:38,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:38,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:24:38,668 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-10-22 11:24:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:46,916 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2019-10-22 11:24:46,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:46,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 11:24:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:46,923 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:24:46,923 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 11:24:46,924 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:24:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 11:24:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-22 11:24:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 11:24:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-10-22 11:24:46,927 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 14 [2019-10-22 11:24:46,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:46,927 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-10-22 11:24:46,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:46,928 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-10-22 11:24:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:24:46,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:46,928 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:47,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:47,129 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1931219048, now seen corresponding path program 1 times [2019-10-22 11:24:47,129 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:47,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074334912] [2019-10-22 11:24:47,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:47,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:47,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:47,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074334912] [2019-10-22 11:24:47,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255574813] [2019-10-22 11:24:47,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 [2019-10-22 11:24:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:47,268 WARN L254 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-22 11:24:47,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:47,376 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:47,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:24:47,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 13 [2019-10-22 11:24:47,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543719666] [2019-10-22 11:24:47,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:47,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:47,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:47,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:24:47,485 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 5 states. [2019-10-22 11:24:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:51,571 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-10-22 11:24:51,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:51,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 11:24:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:51,573 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:24:51,573 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:24:51,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:24:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:24:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-10-22 11:24:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:24:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2019-10-22 11:24:51,577 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 15 [2019-10-22 11:24:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:51,577 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2019-10-22 11:24:51,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2019-10-22 11:24:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:24:51,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:51,578 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:51,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:51,779 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1873960746, now seen corresponding path program 1 times [2019-10-22 11:24:51,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:51,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871404302] [2019-10-22 11:24:51,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:51,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:51,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871404302] [2019-10-22 11:24:52,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045857181] [2019-10-22 11:24:52,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/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 [2019-10-22 11:24:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,116 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-22 11:24:52,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,253 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:52,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:24:52,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 8] total 19 [2019-10-22 11:24:52,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925727540] [2019-10-22 11:24:52,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:52,581 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2019-10-22 11:24:52,581 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 5 states. [2019-10-22 11:24:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,647 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2019-10-22 11:24:54,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:54,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 11:24:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,647 INFO L225 Difference]: With dead ends: 19 [2019-10-22 11:24:54,647 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:54,648 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2019-10-22 11:24:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:54,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-22 11:24:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,649 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:54,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:54,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:54,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:54,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:54,864 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L446 ceAbstractionStarter]: At program point L29(lines 11 30) the Hoare annotation is: true [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 25) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 25) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 18 25) no Hoare annotation was computed. [2019-10-22 11:24:54,865 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 25) no Hoare annotation was computed. [2019-10-22 11:24:54,866 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 27) the Hoare annotation is: (= (mod (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~v4~0 ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) 4294967296) (mod ULTIMATE.start_main_~l~0 4294967296)) [2019-10-22 11:24:54,866 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 27) no Hoare annotation was computed. [2019-10-22 11:24:54,866 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:24:54,866 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:24:54,866 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-10-22 11:24:54,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:54 BoogieIcfgContainer [2019-10-22 11:24:54,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:54,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:54,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:54,878 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:54,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:27" (3/4) ... [2019-10-22 11:24:54,882 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:54,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:24:54,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:24:54,933 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0aef82b4-3512-44df-8f6a-c9f5cf001305/bin/utaipan/witness.graphml [2019-10-22 11:24:54,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:54,935 INFO L168 Benchmark]: Toolchain (without parser) took 28037.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 943.1 MB in the beginning and 985.9 MB in the end (delta: -42.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,940 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:54,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.41 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. [2019-10-22 11:24:54,943 INFO L168 Benchmark]: Boogie Preprocessor took 22.87 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,943 INFO L168 Benchmark]: RCFGBuilder took 212.62 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,944 INFO L168 Benchmark]: TraceAbstraction took 27465.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.6 MB in the end (delta: 103.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,944 INFO L168 Benchmark]: Witness Printer took 55.94 ms. Allocated memory is still 1.1 GB. Free memory was 987.6 MB in the beginning and 985.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:54,947 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.41 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 22.87 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 212.62 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27465.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.6 MB in the end (delta: 103.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.94 ms. Allocated memory is still 1.1 GB. Free memory was 987.6 MB in the beginning and 985.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (i + v4 + k + j) % 4294967296 == l % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 27.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 12 SDslu, 57 SDs, 0 SdLazy, 173 SolverSat, 4 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 22.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 74 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=6, 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, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 259 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 27533 SizeOfPredicates, 28 NumberOfNonLiveVariables, 161 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 24/49 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 correct! Received shutdown request...