./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/sum02_false-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/sum02_false-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 f2964994cdaa1e60b18f6e8e9960cc97625ea606 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 04:10:32,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:10:32,366 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:10:32,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:10:32,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:10:32,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:10:32,374 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:10:32,375 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:10:32,376 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:10:32,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:10:32,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:10:32,378 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:10:32,378 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:10:32,379 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:10:32,380 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:10:32,380 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:10:32,381 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:10:32,382 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:10:32,383 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:10:32,384 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:10:32,385 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:10:32,386 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:10:32,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:10:32,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:10:32,388 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:10:32,388 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:10:32,389 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:10:32,389 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:10:32,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:10:32,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:10:32,391 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:10:32,391 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:10:32,391 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:10:32,392 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:10:32,392 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:10:32,393 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:10:32,393 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 04:10:32,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:10:32,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:10:32,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:10:32,403 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 04:10:32,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 04:10:32,404 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 04:10:32,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 04:10:32,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:10:32,405 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:10:32,405 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:10:32,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:10:32,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:10:32,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:10:32,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:10:32,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 04:10:32,408 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_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 -> f2964994cdaa1e60b18f6e8e9960cc97625ea606 [2018-11-23 04:10:32,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:10:32,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:10:32,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:10:32,443 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:10:32,444 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:10:32,444 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-11-23 04:10:32,479 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/data/65ba85ac2/f53e3d7bfebf48e9b9867fe5be895bcf/FLAGe3e2f69c2 [2018-11-23 04:10:32,874 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:10:32,874 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/sv-benchmarks/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-11-23 04:10:32,878 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/data/65ba85ac2/f53e3d7bfebf48e9b9867fe5be895bcf/FLAGe3e2f69c2 [2018-11-23 04:10:32,888 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/data/65ba85ac2/f53e3d7bfebf48e9b9867fe5be895bcf [2018-11-23 04:10:32,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:10:32,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:10:32,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:10:32,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:10:32,894 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:10:32,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:32" (1/1) ... [2018-11-23 04:10:32,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa4fa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:32, skipping insertion in model container [2018-11-23 04:10:32,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:32" (1/1) ... [2018-11-23 04:10:32,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:10:32,915 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:10:33,019 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:10:33,021 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:10:33,030 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:10:33,038 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:10:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33 WrapperNode [2018-11-23 04:10:33,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:10:33,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:10:33,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:10:33,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:10:33,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:10:33,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:10:33,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:10:33,053 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:10:33,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... [2018-11-23 04:10:33,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:10:33,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:10:33,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:10:33,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:10:33,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 [2018-11-23 04:10:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:10:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:10:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:10:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:10:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:10:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:10:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 04:10:33,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 04:10:33,223 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:10:33,223 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 04:10:33,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:33 BoogieIcfgContainer [2018-11-23 04:10:33,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:10:33,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:10:33,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:10:33,226 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:10:33,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:32" (1/3) ... [2018-11-23 04:10:33,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5279b724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:33, skipping insertion in model container [2018-11-23 04:10:33,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:33" (2/3) ... [2018-11-23 04:10:33,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5279b724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:33, skipping insertion in model container [2018-11-23 04:10:33,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:33" (3/3) ... [2018-11-23 04:10:33,229 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02_false-unreach-call_true-no-overflow.i [2018-11-23 04:10:33,237 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:10:33,242 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:10:33,251 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:10:33,268 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:10:33,269 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:10:33,269 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:10:33,269 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:10:33,269 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:10:33,269 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:10:33,269 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:10:33,269 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:10:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 04:10:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 04:10:33,281 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:10:33,282 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:10:33,283 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:10:33,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:10:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-23 04:10:33,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:10:33,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,317 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:10:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:10:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:10:33,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:10:33,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 04:10:33,350 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:10:33,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 04:10:33,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 04:10:33,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:10:33,361 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-23 04:10:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:10:33,372 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-23 04:10:33,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 04:10:33,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-23 04:10:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:10:33,377 INFO L225 Difference]: With dead ends: 29 [2018-11-23 04:10:33,378 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 04:10:33,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:10:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 04:10:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 04:10:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 04:10:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-23 04:10:33,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-23 04:10:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:10:33,402 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-23 04:10:33,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 04:10:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-23 04:10:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 04:10:33,402 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:10:33,402 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:10:33,402 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:10:33,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:10:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -15914692, now seen corresponding path program 1 times [2018-11-23 04:10:33,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:10:33,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,404 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:10:33,409 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 04:10:33,409 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 04:10:33,409 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 [2018-11-23 04:10:33,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,415 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-23 04:10:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:10:33,435 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-23 04:10:33,435 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 04:10:33,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:10:33,436 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:10:33,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,442 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 04:10:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:10:33,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:10:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:10:33,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:10:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:10:33,528 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:10:33,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-23 04:10:33,528 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:10:33,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:10:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:10:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 04:10:33,529 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-23 04:10:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:10:33,541 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-23 04:10:33,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:10:33,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 04:10:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:10:33,542 INFO L225 Difference]: With dead ends: 19 [2018-11-23 04:10:33,542 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 04:10:33,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 04:10:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 04:10:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-23 04:10:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 04:10:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-23 04:10:33,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-23 04:10:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:10:33,545 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-23 04:10:33,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:10:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-23 04:10:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 04:10:33,546 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:10:33,546 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:10:33,546 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:10:33,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:10:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1244203718, now seen corresponding path program 1 times [2018-11-23 04:10:33,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:10:33,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:33,547 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:10:33,551 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 04:10:33,551 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 04:10:33,552 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 04:10:33,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,560 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-23 04:10:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:10:33,581 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-23 04:10:33,582 INFO L202 CegarAbsIntRunner]: [0], [4], [10], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-11-23 04:10:33,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:10:33,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:10:33,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 04:10:33,775 INFO L272 AbstractInterpreter]: Visited 12 different actions 30 times. Merged at 3 different actions 8 times. Widened at 1 different actions 1 times. Performed 76 root evaluator evaluations with a maximum evaluation depth of 16. Performed 76 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-23 04:10:33,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:10:33,785 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 04:10:33,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:10:33,786 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 [2018-11-23 04:10:33,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:33,799 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 04:10:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:10:33,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:10:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:10:33,859 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:10:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:10:33,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:10:33,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-23 04:10:33,995 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:10:33,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 04:10:33,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 04:10:33,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-23 04:10:33,996 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-11-23 04:10:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:10:34,045 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-23 04:10:34,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 04:10:34,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-11-23 04:10:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:10:34,046 INFO L225 Difference]: With dead ends: 20 [2018-11-23 04:10:34,046 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 04:10:34,046 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 04:10:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 04:10:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-23 04:10:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 04:10:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 04:10:34,049 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-23 04:10:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:10:34,049 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 04:10:34,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 04:10:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 04:10:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 04:10:34,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:10:34,050 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:10:34,050 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:10:34,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:10:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash -513951304, now seen corresponding path program 2 times [2018-11-23 04:10:34,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:10:34,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:34,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:10:34,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:10:34,052 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:10:34,060 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 04:10:34,060 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 04:10:34,060 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e7ccb63-ec81-4bf5-93d8-528c70260909/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 [2018-11-23 04:10:34,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:10:34,087 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-23 04:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 04:10:36,116 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-11-23 04:10:36,116 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #32#return; [?] CALL call #t~ret2 := main(); [?] havoc ~i~0;~n~0 := #t~nondet0;havoc #t~nondet0;~sn~0 := 0;~i~0 := 0; [?] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296);~sn~0 := ~sn~0 + ~i~0; [?] #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; [?] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296);~sn~0 := ~sn~0 + ~i~0; [?] #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; [?] assume !(~i~0 % 4294967296 <= ~n~0 % 4294967296); [?] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [?] ~cond := #in~cond; [?] assume 0 == ~cond; [?] assume !false; [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] assume !(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4-L6] assume 0 == ~cond; [L5] assert false; ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] assume !!(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] assume !(~i~0 % 4294967296 <= ~n~0 % 4294967296); [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4-L6] assume 0 == ~cond; [L5] assert false; [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND TRUE !(~i~0 % 4294967296 <= ~n~0 % 4294967296) [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4] COND TRUE 0 == ~cond [L5] assert false; ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND TRUE !(~i~0 % 4294967296 <= ~n~0 % 4294967296) [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4] COND TRUE 0 == ~cond [L5] assert false; [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND TRUE !(~i~0 % 4294967296 <= ~n~0 % 4294967296) [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4] COND TRUE 0 == ~cond [L5] assert false; ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L11] havoc ~i~0; [L11] ~n~0 := #t~nondet0; [L11] havoc #t~nondet0; [L11] ~sn~0 := 0; [L12] ~i~0 := 0; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND FALSE !(!(~i~0 % 4294967296 <= ~n~0 % 4294967296)) [L13] ~sn~0 := ~sn~0 + ~i~0; [L12] #t~post1 := ~i~0; [L12] ~i~0 := 1 + #t~post1; [L12] havoc #t~post1; [L12-L14] COND TRUE !(~i~0 % 4294967296 <= ~n~0 % 4294967296) [L15] CALL call __VERIFIER_assert((if ~sn~0 % 4294967296 == (if ~n~0 * (1 + ~n~0) % 4294967296 < 0 && 0 != ~n~0 * (1 + ~n~0) % 4294967296 % 2 then 1 + ~n~0 * (1 + ~n~0) % 4294967296 / 2 else ~n~0 * (1 + ~n~0) % 4294967296 / 2) % 4294967296 || 0 == ~sn~0 % 4294967296 then 1 else 0)); [L3-L8] ~cond := #in~cond; [L4] COND TRUE 0 == ~cond [L5] assert false; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND FALSE !(i<=n) [L15] CALL __VERIFIER_assert(sn==(n*(n+1))/2 || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() ----- [2018-11-23 04:10:36,133 WARN L228 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-11-23 04:10:36,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:10:36 BoogieIcfgContainer [2018-11-23 04:10:36,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:10:36,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:10:36,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:10:36,134 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:10:36,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:33" (3/4) ... [2018-11-23 04:10:36,137 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 04:10:36,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:10:36,138 INFO L168 Benchmark]: Toolchain (without parser) took 3247.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -78.7 MB). Peak memory consumption was 91.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:10:36,139 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:10:36,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.76 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:10:36,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.30 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:10:36,140 INFO L168 Benchmark]: Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:10:36,141 INFO L168 Benchmark]: RCFGBuilder took 158.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 04:10:36,141 INFO L168 Benchmark]: TraceAbstraction took 2909.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 11.5 GB. [2018-11-23 04:10:36,142 INFO L168 Benchmark]: Witness Printer took 3.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:10:36,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.76 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 13.30 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2909.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND FALSE !(i<=n) [L15] CALL __VERIFIER_assert(sn==(n*(n+1))/2 || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNKNOWN Result, 2.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 3 SDslu, 64 SDs, 0 SdLazy, 32 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 1 QuantifiedInterpolants, 1006 SizeOfPredicates, 8 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...