./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_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_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/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 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:28:16,035 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:28:16,036 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:28:16,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:28:16,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:28:16,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:28:16,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:28:16,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:28:16,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:28:16,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:28:16,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:28:16,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:28:16,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:28:16,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:28:16,049 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:28:16,049 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:28:16,050 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:28:16,050 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:28:16,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:28:16,052 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:28:16,053 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:28:16,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:28:16,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:28:16,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:28:16,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:28:16,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:28:16,056 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:28:16,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:28:16,057 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:28:16,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:28:16,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:28:16,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:28:16,058 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:28:16,058 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:28:16,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:28:16,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:28:16,059 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 01:28:16,067 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:28:16,067 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:28:16,068 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:28:16,068 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:28:16,068 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:28:16,068 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:28:16,068 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:28:16,069 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:28:16,070 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:28:16,070 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:28:16,070 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:28:16,070 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:28:16,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:28:16,072 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:28:16,072 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:28:16,072 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:28:16,072 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:28:16,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:28:16,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:28:16,073 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:28:16,073 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_47a6b460-530c-452c-bf40-71735f51e077/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 -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2018-12-09 01:28:16,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:28:16,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:28:16,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:28:16,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:28:16,108 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:28:16,108 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-12-09 01:28:16,145 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/data/96c724542/d8a7d0a6b68642b5972b10bd3610ca87/FLAGe75d72fc2 [2018-12-09 01:28:16,516 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:28:16,516 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-12-09 01:28:16,519 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/data/96c724542/d8a7d0a6b68642b5972b10bd3610ca87/FLAGe75d72fc2 [2018-12-09 01:28:16,527 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/data/96c724542/d8a7d0a6b68642b5972b10bd3610ca87 [2018-12-09 01:28:16,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:28:16,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:28:16,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:28:16,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:28:16,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:28:16,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d58bc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16, skipping insertion in model container [2018-12-09 01:28:16,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:28:16,547 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:28:16,633 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:28:16,638 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:28:16,651 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:28:16,659 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:28:16,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16 WrapperNode [2018-12-09 01:28:16,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:28:16,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:28:16,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:28:16,660 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:28:16,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:28:16,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:28:16,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:28:16,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:28:16,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... [2018-12-09 01:28:16,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:28:16,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:28:16,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:28:16,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:28:16,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/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 [2018-12-09 01:28:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 01:28:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:28:16,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:28:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:28:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:28:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:28:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:28:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:28:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:28:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-12-09 01:28:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-12-09 01:28:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:28:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-12-09 01:28:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-12-09 01:28:16,906 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:28:16,907 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 01:28:16,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:28:16 BoogieIcfgContainer [2018-12-09 01:28:16,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:28:16,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:28:16,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:28:16,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:28:16,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:28:16" (1/3) ... [2018-12-09 01:28:16,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747bae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:28:16, skipping insertion in model container [2018-12-09 01:28:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:28:16" (2/3) ... [2018-12-09 01:28:16,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747bae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:28:16, skipping insertion in model container [2018-12-09 01:28:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:28:16" (3/3) ... [2018-12-09 01:28:16,913 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum05_false-unreach-call_true-termination.i [2018-12-09 01:28:16,921 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:28:16,926 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:28:16,940 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:28:16,960 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:28:16,961 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:28:16,961 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:28:16,961 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:28:16,961 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:28:16,961 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:28:16,961 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:28:16,961 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:28:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 01:28:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 01:28:16,976 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:16,977 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:16,978 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:16,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:16,982 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2018-12-09 01:28:16,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:17,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:17,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,012 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:17,058 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 01:28:17,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:17,058 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:17,059 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-12-09 01:28:17,060 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [25], [27], [30], [31], [38], [55], [59], [61], [62], [68], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:17,082 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:17,082 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:17,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:17,150 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Performed 57 root evaluator evaluations with a maximum evaluation depth of 3. Performed 57 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 23 variables. [2018-12-09 01:28:17,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:17,155 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:17,188 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 88.89% of their original sizes. [2018-12-09 01:28:17,188 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:17,201 INFO L418 sIntCurrentIteration]: We unified 36 AI predicates to 36 [2018-12-09 01:28:17,201 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:17,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:28:17,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:28:17,202 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:17,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:28:17,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:28:17,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:28:17,209 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2018-12-09 01:28:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:17,317 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2018-12-09 01:28:17,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:28:17,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-12-09 01:28:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:17,322 INFO L225 Difference]: With dead ends: 66 [2018-12-09 01:28:17,322 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 01:28:17,324 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:28:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 01:28:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-09 01:28:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 01:28:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 01:28:17,348 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2018-12-09 01:28:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:17,348 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 01:28:17,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:28:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 01:28:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 01:28:17,349 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:17,349 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:17,349 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:17,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2018-12-09 01:28:17,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:17,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:17,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,351 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:17,360 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:17,360 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:17,360 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/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 [2018-12-09 01:28:17,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:17,366 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:17,390 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-12-09 01:28:17,391 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [25], [27], [30], [31], [38], [44], [59], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:17,392 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:17,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:17,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:17,421 INFO L272 AbstractInterpreter]: Visited 17 different actions 26 times. Merged at 2 different actions 6 times. Never widened. Performed 151 root evaluator evaluations with a maximum evaluation depth of 3. Performed 151 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 23 variables. [2018-12-09 01:28:17,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:17,426 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:17,444 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 85.4% of their original sizes. [2018-12-09 01:28:17,444 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:17,471 INFO L418 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-12-09 01:28:17,471 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:17,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:28:17,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 01:28:17,471 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:17,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 01:28:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 01:28:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:28:17,472 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 7 states. [2018-12-09 01:28:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:17,636 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-12-09 01:28:17,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:28:17,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 01:28:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:17,637 INFO L225 Difference]: With dead ends: 54 [2018-12-09 01:28:17,637 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 01:28:17,637 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:28:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 01:28:17,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-12-09 01:28:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 01:28:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2018-12-09 01:28:17,641 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 39 [2018-12-09 01:28:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:17,642 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2018-12-09 01:28:17,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 01:28:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2018-12-09 01:28:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 01:28:17,642 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:17,643 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:17,643 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:17,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1719401286, now seen corresponding path program 1 times [2018-12-09 01:28:17,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:17,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:17,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:17,644 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:17,651 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:17,651 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:17,651 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/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 [2018-12-09 01:28:17,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:17,657 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:17,681 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-12-09 01:28:17,681 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [25], [27], [30], [31], [38], [44], [46], [51], [53], [59], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:17,682 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:17,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:17,828 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:17,828 INFO L272 AbstractInterpreter]: Visited 21 different actions 47 times. Merged at 6 different actions 19 times. Widened at 1 different actions 1 times. Performed 219 root evaluator evaluations with a maximum evaluation depth of 10. Performed 219 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 4 fixpoints after 4 different actions. Largest state had 23 variables. [2018-12-09 01:28:17,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:17,834 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:17,896 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 84.74% of their original sizes. [2018-12-09 01:28:17,897 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:17,917 INFO L418 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2018-12-09 01:28:17,917 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:17,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:28:17,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 01:28:17,917 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:17,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 01:28:17,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 01:28:17,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:28:17,918 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 7 states. [2018-12-09 01:28:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:18,075 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2018-12-09 01:28:18,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:28:18,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-12-09 01:28:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:18,077 INFO L225 Difference]: With dead ends: 61 [2018-12-09 01:28:18,077 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 01:28:18,078 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:28:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 01:28:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-12-09 01:28:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 01:28:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-09 01:28:18,085 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 48 [2018-12-09 01:28:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:18,086 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-09 01:28:18,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 01:28:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-09 01:28:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 01:28:18,087 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:18,087 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:18,087 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:18,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 496221539, now seen corresponding path program 1 times [2018-12-09 01:28:18,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:18,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:18,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:18,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:18,089 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-09 01:28:18,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:18,147 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:18,147 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-12-09 01:28:18,147 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [25], [27], [30], [31], [38], [44], [46], [51], [53], [60], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:18,149 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:18,149 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:18,183 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:18,183 INFO L272 AbstractInterpreter]: Visited 28 different actions 68 times. Merged at 5 different actions 24 times. Never widened. Performed 295 root evaluator evaluations with a maximum evaluation depth of 3. Performed 295 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 6 fixpoints after 4 different actions. Largest state had 23 variables. [2018-12-09 01:28:18,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:18,185 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:18,213 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 83.4% of their original sizes. [2018-12-09 01:28:18,213 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:18,262 INFO L418 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2018-12-09 01:28:18,262 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:18,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:28:18,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-12-09 01:28:18,262 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:18,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 01:28:18,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 01:28:18,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-12-09 01:28:18,263 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 12 states. [2018-12-09 01:28:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:18,685 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2018-12-09 01:28:18,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 01:28:18,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-12-09 01:28:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:18,686 INFO L225 Difference]: With dead ends: 74 [2018-12-09 01:28:18,687 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 01:28:18,687 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:28:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 01:28:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-12-09 01:28:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 01:28:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-12-09 01:28:18,694 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 48 [2018-12-09 01:28:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:18,694 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-12-09 01:28:18,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 01:28:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-12-09 01:28:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 01:28:18,696 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:18,696 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:18,696 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:18,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2018-12-09 01:28:18,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:18,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:18,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:18,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:18,697 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-12-09 01:28:18,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:18,729 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:18,730 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-12-09 01:28:18,730 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [19], [21], [25], [27], [30], [31], [38], [44], [46], [51], [53], [60], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:18,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:18,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:18,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:18,761 INFO L272 AbstractInterpreter]: Visited 35 different actions 91 times. Merged at 7 different actions 30 times. Never widened. Performed 386 root evaluator evaluations with a maximum evaluation depth of 3. Performed 386 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 7 fixpoints after 5 different actions. Largest state had 25 variables. [2018-12-09 01:28:18,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:18,763 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:18,797 INFO L227 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 81.06% of their original sizes. [2018-12-09 01:28:18,798 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:18,882 INFO L418 sIntCurrentIteration]: We unified 49 AI predicates to 49 [2018-12-09 01:28:18,882 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:18,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:28:18,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-12-09 01:28:18,882 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:18,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:28:18,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:28:18,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:28:18,883 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 14 states. [2018-12-09 01:28:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:19,308 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2018-12-09 01:28:19,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 01:28:19,309 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-12-09 01:28:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:19,310 INFO L225 Difference]: With dead ends: 66 [2018-12-09 01:28:19,310 INFO L226 Difference]: Without dead ends: 62 [2018-12-09 01:28:19,311 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-12-09 01:28:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-12-09 01:28:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2018-12-09 01:28:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 01:28:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2018-12-09 01:28:19,316 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 50 [2018-12-09 01:28:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:19,316 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2018-12-09 01:28:19,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:28:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2018-12-09 01:28:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-09 01:28:19,317 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:19,318 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:19,318 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:19,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash 395797120, now seen corresponding path program 1 times [2018-12-09 01:28:19,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:19,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:19,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:19,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:19,319 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:19,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 01:28:19,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:19,337 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:19,337 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-12-09 01:28:19,337 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [25], [27], [30], [31], [38], [44], [46], [49], [51], [53], [59], [60], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:19,338 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:19,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:19,506 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:28:19,506 INFO L272 AbstractInterpreter]: Visited 30 different actions 145 times. Merged at 14 different actions 67 times. Widened at 1 different actions 2 times. Performed 701 root evaluator evaluations with a maximum evaluation depth of 10. Performed 701 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 19 fixpoints after 7 different actions. Largest state had 23 variables. [2018-12-09 01:28:19,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:19,510 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:28:19,541 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 86.31% of their original sizes. [2018-12-09 01:28:19,541 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:28:19,584 INFO L418 sIntCurrentIteration]: We unified 50 AI predicates to 50 [2018-12-09 01:28:19,584 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:28:19,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:28:19,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:28:19,584 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:28:19,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:28:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:28:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:28:19,585 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand 8 states. [2018-12-09 01:28:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:19,685 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2018-12-09 01:28:19,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:28:19,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2018-12-09 01:28:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:19,686 INFO L225 Difference]: With dead ends: 73 [2018-12-09 01:28:19,686 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 01:28:19,686 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:28:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 01:28:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-12-09 01:28:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-09 01:28:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2018-12-09 01:28:19,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 51 [2018-12-09 01:28:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:19,691 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2018-12-09 01:28:19,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:28:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2018-12-09 01:28:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 01:28:19,692 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:19,692 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:19,692 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:19,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:19,692 INFO L82 PathProgramCache]: Analyzing trace with hash -515269076, now seen corresponding path program 1 times [2018-12-09 01:28:19,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:19,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:19,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:19,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:19,693 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:19,704 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 01:28:19,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:19,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:19,704 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2018-12-09 01:28:19,704 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [19], [21], [25], [27], [30], [31], [38], [44], [46], [49], [51], [53], [59], [60], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:19,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:19,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:19,936 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:28:19,936 INFO L272 AbstractInterpreter]: Visited 38 different actions 251 times. Merged at 22 different actions 125 times. Widened at 2 different actions 5 times. Performed 1169 root evaluator evaluations with a maximum evaluation depth of 10. Performed 1169 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 36 fixpoints after 11 different actions. Largest state had 25 variables. [2018-12-09 01:28:19,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:19,939 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:28:19,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:19,939 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/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 [2018-12-09 01:28:19,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:19,949 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:28:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:19,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:28:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-12-09 01:28:19,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:28:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-12-09 01:28:20,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:28:20,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 01:28:20,050 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:28:20,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:28:20,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:28:20,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:28:20,052 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 6 states. [2018-12-09 01:28:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:20,065 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2018-12-09 01:28:20,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:28:20,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-12-09 01:28:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:20,066 INFO L225 Difference]: With dead ends: 95 [2018-12-09 01:28:20,066 INFO L226 Difference]: Without dead ends: 56 [2018-12-09 01:28:20,066 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:28:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-09 01:28:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-12-09 01:28:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-09 01:28:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-12-09 01:28:20,071 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 53 [2018-12-09 01:28:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:20,071 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-12-09 01:28:20,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:28:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-12-09 01:28:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-09 01:28:20,072 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:20,072 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:20,072 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:20,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -871058906, now seen corresponding path program 2 times [2018-12-09 01:28:20,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,073 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:20,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 01:28:20,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:20,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:28:20,088 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:28:20,089 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:28:20,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:20,089 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/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 [2018-12-09 01:28:20,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:28:20,096 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 01:28:20,115 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 01:28:20,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:28:20,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:28:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-12-09 01:28:20,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:28:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-12-09 01:28:20,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:28:20,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-09 01:28:20,182 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:28:20,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:28:20,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:28:20,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:28:20,183 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 5 states. [2018-12-09 01:28:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:20,199 INFO L93 Difference]: Finished difference Result 95 states and 132 transitions. [2018-12-09 01:28:20,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:28:20,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-12-09 01:28:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:20,200 INFO L225 Difference]: With dead ends: 95 [2018-12-09 01:28:20,200 INFO L226 Difference]: Without dead ends: 60 [2018-12-09 01:28:20,200 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:28:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-09 01:28:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-12-09 01:28:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-09 01:28:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2018-12-09 01:28:20,205 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 59 [2018-12-09 01:28:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:20,205 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2018-12-09 01:28:20,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:28:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2018-12-09 01:28:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-09 01:28:20,205 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:20,206 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:20,206 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:20,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,206 INFO L82 PathProgramCache]: Analyzing trace with hash -336825618, now seen corresponding path program 1 times [2018-12-09 01:28:20,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:20,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:28:20,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,207 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:20,212 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:20,212 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:20,212 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:28:20,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:20,220 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:20,245 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 75 with the following transitions: [2018-12-09 01:28:20,245 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [17], [19], [21], [25], [27], [30], [31], [38], [44], [46], [49], [51], [53], [59], [61], [62], [68], [70], [72], [76], [77], [78], [79], [81], [82], [83], [84], [85], [86], [87], [88] [2018-12-09 01:28:20,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:28:20,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:28:20,387 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:28:20,387 INFO L272 AbstractInterpreter]: Visited 37 different actions 114 times. Merged at 9 different actions 38 times. Never widened. Performed 524 root evaluator evaluations with a maximum evaluation depth of 10. Performed 524 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 12 fixpoints after 6 different actions. Largest state had 25 variables. [2018-12-09 01:28:20,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,388 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:28:20,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:20,388 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:28:20,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:20,396 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:28:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:20,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:28:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-12-09 01:28:20,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:28:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-12-09 01:28:20,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:28:20,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-09 01:28:20,486 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:28:20,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 01:28:20,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 01:28:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:28:20,486 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 7 states. [2018-12-09 01:28:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:20,499 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2018-12-09 01:28:20,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:28:20,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2018-12-09 01:28:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:20,500 INFO L225 Difference]: With dead ends: 99 [2018-12-09 01:28:20,500 INFO L226 Difference]: Without dead ends: 59 [2018-12-09 01:28:20,500 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:28:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-09 01:28:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-12-09 01:28:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-09 01:28:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2018-12-09 01:28:20,505 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 74 [2018-12-09 01:28:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:20,505 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2018-12-09 01:28:20,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 01:28:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2018-12-09 01:28:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-12-09 01:28:20,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:20,506 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:20,506 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:20,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1529317936, now seen corresponding path program 2 times [2018-12-09 01:28:20,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:20,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:20,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,508 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:20,516 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:20,516 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:20,516 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:28:20,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:28:20,522 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:20,546 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:28:20,546 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:28:20,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:20,546 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:28:20,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:28:20,552 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 01:28:20,569 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 01:28:20,569 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:28:20,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:28:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-12-09 01:28:20,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:28:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-12-09 01:28:20,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:28:20,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 01:28:20,614 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:28:20,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:28:20,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:28:20,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:28:20,615 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 6 states. [2018-12-09 01:28:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:20,637 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2018-12-09 01:28:20,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:28:20,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2018-12-09 01:28:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:20,637 INFO L225 Difference]: With dead ends: 95 [2018-12-09 01:28:20,638 INFO L226 Difference]: Without dead ends: 71 [2018-12-09 01:28:20,638 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:28:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-12-09 01:28:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-12-09 01:28:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-12-09 01:28:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2018-12-09 01:28:20,643 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 76 [2018-12-09 01:28:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:20,643 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2018-12-09 01:28:20,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:28:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2018-12-09 01:28:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-12-09 01:28:20,643 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:20,643 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:20,643 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:20,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1237922710, now seen corresponding path program 3 times [2018-12-09 01:28:20,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:20,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:28:20,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,644 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:20,649 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:20,649 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:20,649 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:28:20,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:28:20,655 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:28:20,679 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:28:20,680 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:28:20,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:28:20,680 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:28:20,685 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:28:20,685 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 01:28:20,702 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:28:20,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:28:20,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:28:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-12-09 01:28:20,713 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:28:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-12-09 01:28:20,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:28:20,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-09 01:28:20,748 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:28:20,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:28:20,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:28:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:28:20,749 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 5 states. [2018-12-09 01:28:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:28:20,760 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2018-12-09 01:28:20,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:28:20,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2018-12-09 01:28:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:28:20,761 INFO L225 Difference]: With dead ends: 125 [2018-12-09 01:28:20,761 INFO L226 Difference]: Without dead ends: 77 [2018-12-09 01:28:20,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:28:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-09 01:28:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-12-09 01:28:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-12-09 01:28:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2018-12-09 01:28:20,767 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 82 [2018-12-09 01:28:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:28:20,767 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2018-12-09 01:28:20,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:28:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2018-12-09 01:28:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-12-09 01:28:20,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:28:20,768 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:28:20,769 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:28:20,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:28:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 4 times [2018-12-09 01:28:20,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:28:20,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:28:20,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:28:20,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:28:20,775 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:28:20,775 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:28:20,775 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:28:20,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:28:20,781 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:28:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:28:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:28:20,917 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:28:20,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:28:20 BoogieIcfgContainer [2018-12-09 01:28:20,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:28:20,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:28:20,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:28:20,949 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:28:20,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:28:16" (3/4) ... [2018-12-09 01:28:20,950 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:28:21,008 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_47a6b460-530c-452c-bf40-71735f51e077/bin-2019/utaipan/witness.graphml [2018-12-09 01:28:21,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:28:21,008 INFO L168 Benchmark]: Toolchain (without parser) took 4479.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 293.1 MB). Free memory was 950.8 MB in the beginning and 969.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 274.9 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,009 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:28:21,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.48 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.33 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,010 INFO L168 Benchmark]: Boogie Preprocessor took 44.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,010 INFO L168 Benchmark]: RCFGBuilder took 187.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,010 INFO L168 Benchmark]: TraceAbstraction took 4040.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 120.2 MB). Peak memory consumption was 291.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,010 INFO L168 Benchmark]: Witness Printer took 59.27 ms. Allocated memory is still 1.3 GB. Free memory was 977.1 MB in the beginning and 969.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-12-09 01:28:21,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.48 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 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 14.33 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 187.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4040.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 120.2 MB). Peak memory consumption was 291.6 MB. Max. memory is 11.5 GB. * Witness Printer took 59.27 ms. Allocated memory is still 1.3 GB. Free memory was 977.1 MB in the beginning and 969.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={9:0}] [L32] CALL init_nondet(x) VAL [x={9:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={9:0}, x={9:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={9:0}, x={9:0}] [L32] RET init_nondet(x) VAL [x={9:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={9:0}] [L38] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483647, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483647, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483647, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-6, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-3, cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-3, x={9:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-3, temp=2147483644, x={9:0}] [L41] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483647, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483647, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483647, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-6, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-3, cnt=2, i=5, ret=-6, x={9:0}, x={9:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-3, ret=-3, temp=2147483644, x={9:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L46] x[5 -1] = temp VAL [i=4, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L47] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=2147483641, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=2147483641, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=2147483641, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=4294961886, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=4294961886, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=4294961886, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=2147480943, cnt=2, i=5, ret=4294961886, x={9:0}, x={9:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=2147480943, ret=-3, ret2=-3, temp=2147478245, x={9:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=-3, ret2=-3, ret5=2147480943, temp=2147478245, x={9:0}] [L50] __VERIFIER_error() VAL [i=4, ret=-3, ret2=-3, ret5=2147480943, temp=2147478245, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. UNSAFE Result, 3.9s OverallTime, 12 OverallIterations, 15 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 341 SDtfs, 240 SDslu, 1081 SDs, 0 SdLazy, 78 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 970 GetRequests, 886 SyntacticMatches, 9 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 8 AbstIntIterations, 6 AbstIntStrong, 0.8930923737103509 AbsIntWeakeningRatio, 1.1797752808988764 AbsIntAvgWeakeningVarsNumRemoved, 3.3895131086142323 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1061 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 774 ConstructedInterpolants, 0 QuantifiedInterpolants, 59092 SizeOfPredicates, 6 NumberOfNonLiveVariables, 889 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 12 InterpolantComputations, 0 PerfectInterpolantSequences, 1213/1355 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...