./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/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 4090a90876c90ba415ea4bea59e2b23309410708 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 21:05:07,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:05:07,078 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:05:07,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:05:07,085 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:05:07,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:05:07,086 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:05:07,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:05:07,088 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:05:07,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:05:07,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:05:07,089 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:05:07,089 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:05:07,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:05:07,090 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:05:07,091 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:05:07,091 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:05:07,092 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:05:07,093 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:05:07,094 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:05:07,095 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:05:07,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:05:07,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:05:07,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:05:07,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:05:07,097 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:05:07,098 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:05:07,098 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:05:07,099 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:05:07,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:05:07,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:05:07,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:05:07,100 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:05:07,100 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:05:07,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:05:07,101 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:05:07,101 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 21:05:07,109 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:05:07,109 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:05:07,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 21:05:07,110 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 21:05:07,110 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 21:05:07,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:05:07,111 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 21:05:07,112 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 21:05:07,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 21:05:07,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 21:05:07,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 21:05:07,113 INFO L133 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_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/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 -> 4090a90876c90ba415ea4bea59e2b23309410708 [2018-12-02 21:05:07,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:05:07,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:05:07,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:05:07,143 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:05:07,143 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:05:07,143 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-12-02 21:05:07,187 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/data/38911dc61/7cb5bde384774fb5a5c1ab5217c6bb10/FLAGc0f191d66 [2018-12-02 21:05:07,579 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:05:07,580 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-12-02 21:05:07,583 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/data/38911dc61/7cb5bde384774fb5a5c1ab5217c6bb10/FLAGc0f191d66 [2018-12-02 21:05:07,591 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/data/38911dc61/7cb5bde384774fb5a5c1ab5217c6bb10 [2018-12-02 21:05:07,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:05:07,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:05:07,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:05:07,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:05:07,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:05:07,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07, skipping insertion in model container [2018-12-02 21:05:07,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:05:07,611 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:05:07,696 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:05:07,698 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:05:07,708 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:05:07,719 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:05:07,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07 WrapperNode [2018-12-02 21:05:07,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:05:07,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:05:07,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:05:07,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:05:07,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:05:07,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:05:07,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:05:07,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:05:07,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... [2018-12-02 21:05:07,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:05:07,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:05:07,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:05:07,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:05:07,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/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 [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 21:05:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:05:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 21:05:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 21:05:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 21:05:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 21:05:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 21:05:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 21:05:07,926 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:05:07,926 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 21:05:07,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:05:07 BoogieIcfgContainer [2018-12-02 21:05:07,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:05:07,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 21:05:07,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 21:05:07,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 21:05:07,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:05:07" (1/3) ... [2018-12-02 21:05:07,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6ebba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:05:07, skipping insertion in model container [2018-12-02 21:05:07,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:05:07" (2/3) ... [2018-12-02 21:05:07,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6ebba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:05:07, skipping insertion in model container [2018-12-02 21:05:07,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:05:07" (3/3) ... [2018-12-02 21:05:07,931 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-12-02 21:05:07,938 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 21:05:07,945 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 21:05:07,959 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 21:05:07,983 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 21:05:07,983 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 21:05:07,983 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 21:05:07,983 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:05:07,983 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:05:07,983 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 21:05:07,983 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:05:07,984 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 21:05:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-12-02 21:05:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 21:05:07,997 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:07,997 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:07,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,002 INFO L82 PathProgramCache]: Analyzing trace with hash -413900697, now seen corresponding path program 1 times [2018-12-02 21:05:08,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:05:08,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 21:05:08,085 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:05:08,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 21:05:08,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 21:05:08,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 21:05:08,097 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-12-02 21:05:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,108 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-12-02 21:05:08,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 21:05:08,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-12-02 21:05:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,114 INFO L225 Difference]: With dead ends: 42 [2018-12-02 21:05:08,114 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 21:05:08,116 INFO L631 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 [2018-12-02 21:05:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 21:05:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 21:05:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 21:05:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-02 21:05:08,136 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-12-02 21:05:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,136 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-02 21:05:08,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 21:05:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-02 21:05:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 21:05:08,137 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:08,137 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:08,137 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2053026861, now seen corresponding path program 1 times [2018-12-02 21:05:08,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 21:05:08,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 21:05:08,179 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:05:08,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 21:05:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 21:05:08,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:05:08,181 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-12-02 21:05:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,203 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-12-02 21:05:08,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 21:05:08,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-02 21:05:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,204 INFO L225 Difference]: With dead ends: 35 [2018-12-02 21:05:08,205 INFO L226 Difference]: Without dead ends: 25 [2018-12-02 21:05:08,205 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 21:05:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-02 21:05:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-12-02 21:05:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 21:05:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-12-02 21:05:08,208 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-12-02 21:05:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,208 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-12-02 21:05:08,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 21:05:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-12-02 21:05:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 21:05:08,209 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:08,209 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:08,209 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1766388751, now seen corresponding path program 1 times [2018-12-02 21:05:08,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,210 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,236 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 21:05:08,236 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-02 21:05:08,237 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [23], [26], [42], [45], [47], [53], [54], [55], [57] [2018-12-02 21:05:08,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 21:05:08,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 21:05:08,352 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 21:05:08,352 INFO L272 AbstractInterpreter]: Visited 16 different actions 25 times. Merged at 2 different actions 6 times. Never widened. Performed 128 root evaluator evaluations with a maximum evaluation depth of 3. Performed 128 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 16 variables. [2018-12-02 21:05:08,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,357 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 21:05:08,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,357 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 21:05:08,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,364 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 21:05:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:05:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 21:05:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 21:05:08,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-12-02 21:05:08,423 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 21:05:08,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 21:05:08,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 21:05:08,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 21:05:08,424 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-12-02 21:05:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,458 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-12-02 21:05:08,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 21:05:08,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-02 21:05:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,459 INFO L225 Difference]: With dead ends: 45 [2018-12-02 21:05:08,459 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 21:05:08,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 21:05:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 21:05:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-12-02 21:05:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 21:05:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-12-02 21:05:08,462 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2018-12-02 21:05:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,462 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-12-02 21:05:08,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 21:05:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-12-02 21:05:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 21:05:08,463 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:08,463 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:08,463 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1185071985, now seen corresponding path program 2 times [2018-12-02 21:05:08,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,464 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:05:08,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,487 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 21:05:08,487 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 21:05:08,487 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 21:05:08,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,487 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 21:05:08,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 21:05:08,496 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 21:05:08,504 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-12-02 21:05:08,504 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 21:05:08,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:05:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 21:05:08,527 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 21:05:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 21:05:08,567 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-02 21:05:08,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 11 [2018-12-02 21:05:08,567 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:05:08,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 21:05:08,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 21:05:08,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-02 21:05:08,568 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2018-12-02 21:05:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,593 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-02 21:05:08,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:05:08,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-02 21:05:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,594 INFO L225 Difference]: With dead ends: 33 [2018-12-02 21:05:08,594 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 21:05:08,595 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-12-02 21:05:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 21:05:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 21:05:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 21:05:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-02 21:05:08,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2018-12-02 21:05:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,597 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-02 21:05:08,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 21:05:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-02 21:05:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 21:05:08,598 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:08,598 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:08,598 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1169510792, now seen corresponding path program 1 times [2018-12-02 21:05:08,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:05:08,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,599 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 21:05:08,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,620 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 21:05:08,620 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-12-02 21:05:08,620 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [23], [26], [28], [33], [35], [42], [45], [47], [53], [54], [55], [57] [2018-12-02 21:05:08,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 21:05:08,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 21:05:08,673 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 21:05:08,673 INFO L272 AbstractInterpreter]: Visited 19 different actions 64 times. Merged at 7 different actions 26 times. Never widened. Performed 304 root evaluator evaluations with a maximum evaluation depth of 3. Performed 304 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 3 fixpoints after 3 different actions. Largest state had 17 variables. [2018-12-02 21:05:08,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,678 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 21:05:08,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,678 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 21:05:08,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,684 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 21:05:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:05:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 21:05:08,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 21:05:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 21:05:08,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 21:05:08,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-02 21:05:08,741 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 21:05:08,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 21:05:08,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 21:05:08,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 21:05:08,741 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-12-02 21:05:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,765 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-12-02 21:05:08,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 21:05:08,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-12-02 21:05:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,765 INFO L225 Difference]: With dead ends: 55 [2018-12-02 21:05:08,766 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 21:05:08,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 21:05:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 21:05:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-12-02 21:05:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 21:05:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-02 21:05:08,769 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 22 [2018-12-02 21:05:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,769 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-02 21:05:08,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 21:05:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-02 21:05:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 21:05:08,769 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 21:05:08,769 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:05:08,770 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 21:05:08,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:05:08,770 INFO L82 PathProgramCache]: Analyzing trace with hash -621810598, now seen corresponding path program 2 times [2018-12-02 21:05:08,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 21:05:08,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:05:08,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:05:08,771 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 21:05:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:05:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 21:05:08,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,798 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 21:05:08,799 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 21:05:08,799 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 21:05:08,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 21:05:08,799 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 21:05:08,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 21:05:08,807 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 21:05:08,816 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-02 21:05:08,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 21:05:08,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:05:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 21:05:08,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 21:05:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 21:05:08,900 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-02 21:05:08,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 13 [2018-12-02 21:05:08,900 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 21:05:08,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 21:05:08,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 21:05:08,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-12-02 21:05:08,901 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2018-12-02 21:05:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 21:05:08,928 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-12-02 21:05:08,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 21:05:08,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-02 21:05:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 21:05:08,929 INFO L225 Difference]: With dead ends: 34 [2018-12-02 21:05:08,929 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 21:05:08,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-12-02 21:05:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 21:05:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 21:05:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 21:05:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 21:05:08,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-12-02 21:05:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 21:05:08,930 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:05:08,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 21:05:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 21:05:08,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 21:05:08,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 21:05:08,952 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 21:05:08,953 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L444 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-12-02 21:05:08,953 INFO L444 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-12-02 21:05:08,953 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L451 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: true [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-02 21:05:08,954 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-02 21:05:08,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:05:08 BoogieIcfgContainer [2018-12-02 21:05:08,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 21:05:08,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 21:05:08,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 21:05:08,962 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 21:05:08,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:05:07" (3/4) ... [2018-12-02 21:05:08,964 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 21:05:08,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 21:05:08,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 21:05:08,969 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-02 21:05:08,971 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-02 21:05:08,971 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 21:05:08,971 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 21:05:08,996 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_752cf4a3-4dc9-4f52-8478-e33014d716ff/bin-2019/utaipan/witness.graphml [2018-12-02 21:05:08,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 21:05:08,997 INFO L168 Benchmark]: Toolchain (without parser) took 1404.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 958.8 MB in the beginning and 975.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 151.5 MB. Max. memory is 11.5 GB. [2018-12-02 21:05:08,998 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:05:08,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:05:08,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.48 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:05:08,999 INFO L168 Benchmark]: Boogie Preprocessor took 45.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 948.1 MB in the beginning and 1.2 GB in the end (delta: -215.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:05:08,999 INFO L168 Benchmark]: RCFGBuilder took 141.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-02 21:05:08,999 INFO L168 Benchmark]: TraceAbstraction took 1034.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.6 MB in the end (delta: 174.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 11.5 GB. [2018-12-02 21:05:08,999 INFO L168 Benchmark]: Witness Printer took 34.85 ms. Allocated memory is still 1.2 GB. Free memory is still 975.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:05:09,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.48 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 948.1 MB in the beginning and 1.2 GB in the end (delta: -215.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 141.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1034.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.6 MB in the end (delta: 174.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.85 ms. Allocated memory is still 1.2 GB. Free memory is still 975.6 MB. There was no memory consumed. 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: 17]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 45 SDslu, 139 SDs, 0 SdLazy, 119 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 22 NumberOfFragments, 12 HoareAnnotationTreeSize, 13 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 187 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 7155 SizeOfPredicates, 7 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 38/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...