./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10_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_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 af68da58954d6230e3860792840330ae6de845ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:48:50,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 08:48:50,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 08:48:50,262 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 08:48:50,262 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 08:48:50,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 08:48:50,263 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 08:48:50,264 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 08:48:50,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 08:48:50,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 08:48:50,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 08:48:50,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 08:48:50,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 08:48:50,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 08:48:50,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 08:48:50,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 08:48:50,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 08:48:50,271 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 08:48:50,273 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 08:48:50,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 08:48:50,275 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 08:48:50,275 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 08:48:50,277 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 08:48:50,277 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 08:48:50,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 08:48:50,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 08:48:50,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 08:48:50,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 08:48:50,280 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 08:48:50,281 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 08:48:50,281 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 08:48:50,281 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 08:48:50,282 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 08:48:50,282 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 08:48:50,282 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 08:48:50,283 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 08:48:50,283 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 08:48:50,293 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 08:48:50,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 08:48:50,294 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 08:48:50,294 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 08:48:50,294 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 08:48:50,294 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 08:48:50,294 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 08:48:50,294 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 08:48:50,294 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 08:48:50,295 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 08:48:50,295 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 08:48:50,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 08:48:50,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 08:48:50,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 08:48:50,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 08:48:50,298 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 08:48:50,298 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_fe1d4879-06df-4b05-afbc-151005f15b4d/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 -> af68da58954d6230e3860792840330ae6de845ab [2018-12-09 08:48:50,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 08:48:50,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 08:48:50,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 08:48:50,333 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 08:48:50,334 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 08:48:50,334 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-12-09 08:48:50,381 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/data/db185f5e3/d15360fc876d42b6b78223da2e7f88ac/FLAG662a2d244 [2018-12-09 08:48:50,825 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 08:48:50,825 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-12-09 08:48:50,829 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/data/db185f5e3/d15360fc876d42b6b78223da2e7f88ac/FLAG662a2d244 [2018-12-09 08:48:50,836 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/data/db185f5e3/d15360fc876d42b6b78223da2e7f88ac [2018-12-09 08:48:50,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 08:48:50,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 08:48:50,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 08:48:50,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 08:48:50,842 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 08:48:50,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:50,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc69958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50, skipping insertion in model container [2018-12-09 08:48:50,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:50,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 08:48:50,857 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 08:48:50,947 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:48:50,952 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 08:48:50,965 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:48:50,973 INFO L195 MainTranslator]: Completed translation [2018-12-09 08:48:50,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50 WrapperNode [2018-12-09 08:48:50,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 08:48:50,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 08:48:50,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 08:48:50,974 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 08:48:50,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:50,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:50,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 08:48:50,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 08:48:50,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 08:48:50,994 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 08:48:51,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... [2018-12-09 08:48:51,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 08:48:51,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 08:48:51,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 08:48:51,042 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 08:48:51,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 08:48:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 08:48:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 08:48:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 08:48:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 08:48:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-12-09 08:48:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-12-09 08:48:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 08:48:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-12-09 08:48:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-12-09 08:48:51,204 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 08:48:51,205 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 08:48:51,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:48:51 BoogieIcfgContainer [2018-12-09 08:48:51,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 08:48:51,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 08:48:51,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 08:48:51,207 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 08:48:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:48:50" (1/3) ... [2018-12-09 08:48:51,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff0e84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:48:51, skipping insertion in model container [2018-12-09 08:48:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:48:50" (2/3) ... [2018-12-09 08:48:51,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff0e84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:48:51, skipping insertion in model container [2018-12-09 08:48:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:48:51" (3/3) ... [2018-12-09 08:48:51,209 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10_false-unreach-call_true-termination.i [2018-12-09 08:48:51,216 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 08:48:51,220 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 08:48:51,230 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 08:48:51,248 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 08:48:51,248 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 08:48:51,248 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 08:48:51,248 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 08:48:51,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 08:48:51,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 08:48:51,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 08:48:51,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 08:48:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 08:48:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 08:48:51,263 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:51,263 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 08:48:51,265 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:51,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2018-12-09 08:48:51,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:51,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:51,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:51,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:51,306 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:51,359 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 08:48:51,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:51,359 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:51,360 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-12-09 08:48:51,362 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 08:48:51,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:51,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:51,451 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:51,452 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 08:48:51,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:51,458 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:51,490 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 88.89% of their original sizes. [2018-12-09 08:48:51,491 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:51,502 INFO L418 sIntCurrentIteration]: We unified 36 AI predicates to 36 [2018-12-09 08:48:51,502 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:51,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:48:51,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 08:48:51,504 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:51,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 08:48:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 08:48:51,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 08:48:51,511 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2018-12-09 08:48:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:51,641 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2018-12-09 08:48:51,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 08:48:51,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-12-09 08:48:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:51,647 INFO L225 Difference]: With dead ends: 66 [2018-12-09 08:48:51,647 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 08:48:51,649 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 08:48:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 08:48:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-09 08:48:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:48:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 08:48:51,673 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2018-12-09 08:48:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:51,674 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 08:48:51,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 08:48:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 08:48:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 08:48:51,675 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:51,675 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 08:48:51,675 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:51,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2018-12-09 08:48:51,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:51,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:51,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:51,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:51,676 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:51,685 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:51,685 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:51,685 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:51,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:51,692 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:51,730 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-12-09 08:48:51,730 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 08:48:51,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:51,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:51,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:51,766 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 08:48:51,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:51,768 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:51,787 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 85.4% of their original sizes. [2018-12-09 08:48:51,787 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:51,822 INFO L418 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-12-09 08:48:51,822 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:51,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:48:51,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 08:48:51,822 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:51,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 08:48:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 08:48:51,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 08:48:51,823 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 7 states. [2018-12-09 08:48:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:51,999 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-12-09 08:48:51,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 08:48:51,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 08:48:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:52,000 INFO L225 Difference]: With dead ends: 54 [2018-12-09 08:48:52,000 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:48:52,001 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 08:48:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:48:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-12-09 08:48:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 08:48:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2018-12-09 08:48:52,005 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 39 [2018-12-09 08:48:52,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:52,006 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2018-12-09 08:48:52,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 08:48:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2018-12-09 08:48:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 08:48:52,007 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:52,007 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 08:48:52,007 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:52,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1719401286, now seen corresponding path program 1 times [2018-12-09 08:48:52,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:52,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:52,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:52,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:52,008 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:52,016 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:52,016 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:52,016 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:52,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:52,023 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:52,050 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-12-09 08:48:52,051 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 08:48:52,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:52,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:52,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:52,227 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 08:48:52,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:52,230 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:52,298 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 84.74% of their original sizes. [2018-12-09 08:48:52,298 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:52,322 INFO L418 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2018-12-09 08:48:52,322 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:52,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:48:52,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 08:48:52,322 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:52,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 08:48:52,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 08:48:52,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 08:48:52,323 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 7 states. [2018-12-09 08:48:52,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:52,478 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2018-12-09 08:48:52,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 08:48:52,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-12-09 08:48:52,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:52,480 INFO L225 Difference]: With dead ends: 61 [2018-12-09 08:48:52,480 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 08:48:52,481 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 08:48:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 08:48:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-12-09 08:48:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 08:48:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-09 08:48:52,488 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 48 [2018-12-09 08:48:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:52,488 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-09 08:48:52,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 08:48:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-09 08:48:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 08:48:52,489 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:52,489 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 08:48:52,490 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:52,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:52,490 INFO L82 PathProgramCache]: Analyzing trace with hash 496221539, now seen corresponding path program 1 times [2018-12-09 08:48:52,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:52,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:52,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:52,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:52,491 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:52,548 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 08:48:52,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:52,548 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:52,549 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-12-09 08:48:52,549 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 08:48:52,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:52,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:52,590 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:52,591 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 08:48:52,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:52,593 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:52,623 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 83.4% of their original sizes. [2018-12-09 08:48:52,623 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:52,683 INFO L418 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2018-12-09 08:48:52,684 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:52,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 08:48:52,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-12-09 08:48:52,684 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:52,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 08:48:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 08:48:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-12-09 08:48:52,685 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 12 states. [2018-12-09 08:48:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:53,092 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2018-12-09 08:48:53,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 08:48:53,093 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-12-09 08:48:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:53,094 INFO L225 Difference]: With dead ends: 74 [2018-12-09 08:48:53,094 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 08:48:53,094 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 08:48:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 08:48:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-12-09 08:48:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 08:48:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-12-09 08:48:53,101 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 48 [2018-12-09 08:48:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:53,102 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-12-09 08:48:53,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 08:48:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-12-09 08:48:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 08:48:53,103 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:53,103 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 08:48:53,104 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:53,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2018-12-09 08:48:53,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:53,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:53,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:53,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:53,105 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:53,143 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 08:48:53,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:53,144 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:53,144 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-12-09 08:48:53,144 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 08:48:53,146 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:53,146 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:53,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:53,186 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 08:48:53,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:53,187 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:53,219 INFO L227 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 81.06% of their original sizes. [2018-12-09 08:48:53,219 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:53,312 INFO L418 sIntCurrentIteration]: We unified 49 AI predicates to 49 [2018-12-09 08:48:53,312 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:53,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 08:48:53,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-12-09 08:48:53,312 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:53,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 08:48:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 08:48:53,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-09 08:48:53,313 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 14 states. [2018-12-09 08:48:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:54,330 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2018-12-09 08:48:54,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 08:48:54,330 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-12-09 08:48:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:54,331 INFO L225 Difference]: With dead ends: 66 [2018-12-09 08:48:54,331 INFO L226 Difference]: Without dead ends: 62 [2018-12-09 08:48:54,332 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 08:48:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-12-09 08:48:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2018-12-09 08:48:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 08:48:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2018-12-09 08:48:54,336 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 50 [2018-12-09 08:48:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:54,336 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2018-12-09 08:48:54,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 08:48:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2018-12-09 08:48:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-09 08:48:54,337 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:54,337 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 08:48:54,337 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:54,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:54,337 INFO L82 PathProgramCache]: Analyzing trace with hash 395797120, now seen corresponding path program 1 times [2018-12-09 08:48:54,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:54,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:54,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:54,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:54,338 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:54,349 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 08:48:54,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:54,349 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:54,349 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-12-09 08:48:54,349 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 08:48:54,350 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:54,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:54,503 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 08:48:54,504 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 08:48:54,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:54,509 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 08:48:54,531 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 86.31% of their original sizes. [2018-12-09 08:48:54,531 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 08:48:54,564 INFO L418 sIntCurrentIteration]: We unified 50 AI predicates to 50 [2018-12-09 08:48:54,564 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 08:48:54,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:48:54,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 08:48:54,564 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 08:48:54,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 08:48:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 08:48:54,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 08:48:54,565 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand 8 states. [2018-12-09 08:48:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:54,691 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2018-12-09 08:48:54,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 08:48:54,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2018-12-09 08:48:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:54,692 INFO L225 Difference]: With dead ends: 73 [2018-12-09 08:48:54,692 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 08:48:54,692 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 08:48:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 08:48:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-12-09 08:48:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-09 08:48:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2018-12-09 08:48:54,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 51 [2018-12-09 08:48:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:54,697 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2018-12-09 08:48:54,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 08:48:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2018-12-09 08:48:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 08:48:54,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:54,698 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 08:48:54,698 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:54,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash -515269076, now seen corresponding path program 1 times [2018-12-09 08:48:54,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:54,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:54,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:54,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:54,699 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:54,709 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 08:48:54,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:54,709 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:54,709 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2018-12-09 08:48:54,709 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 08:48:54,710 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:54,710 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:54,929 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 08:48:54,929 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 08:48:54,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:54,937 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 08:48:54,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:54,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:54,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:54,948 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 08:48:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:54,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:54,999 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 08:48:54,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:55,035 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 08:48:55,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:55,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 08:48:55,061 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:55,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 08:48:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 08:48:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 08:48:55,063 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 6 states. [2018-12-09 08:48:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:55,077 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2018-12-09 08:48:55,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 08:48:55,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-12-09 08:48:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:55,078 INFO L225 Difference]: With dead ends: 95 [2018-12-09 08:48:55,078 INFO L226 Difference]: Without dead ends: 56 [2018-12-09 08:48:55,079 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 08:48:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-09 08:48:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-12-09 08:48:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-09 08:48:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-12-09 08:48:55,083 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 53 [2018-12-09 08:48:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:55,083 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-12-09 08:48:55,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 08:48:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-12-09 08:48:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-09 08:48:55,084 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:55,084 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 08:48:55,084 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:55,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,084 INFO L82 PathProgramCache]: Analyzing trace with hash -871058906, now seen corresponding path program 2 times [2018-12-09 08:48:55,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:55,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-09 08:48:55,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,100 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 08:48:55,100 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 08:48:55,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 08:48:55,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,100 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,107 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 08:48:55,108 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 08:48:55,127 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 08:48:55,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 08:48:55,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:55,150 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 08:48:55,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:55,168 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 08:48:55,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:55,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-12-09 08:48:55,184 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:55,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 08:48:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 08:48:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 08:48:55,184 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 7 states. [2018-12-09 08:48:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:55,203 INFO L93 Difference]: Finished difference Result 101 states and 142 transitions. [2018-12-09 08:48:55,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 08:48:55,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2018-12-09 08:48:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:55,205 INFO L225 Difference]: With dead ends: 101 [2018-12-09 08:48:55,205 INFO L226 Difference]: Without dead ends: 66 [2018-12-09 08:48:55,206 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 08:48:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-12-09 08:48:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-12-09 08:48:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-12-09 08:48:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2018-12-09 08:48:55,214 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 59 [2018-12-09 08:48:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:55,215 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2018-12-09 08:48:55,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 08:48:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2018-12-09 08:48:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-09 08:48:55,216 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:55,216 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 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 08:48:55,216 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:55,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash 896980142, now seen corresponding path program 1 times [2018-12-09 08:48:55,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:55,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:55,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,217 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:55,225 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:55,226 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:55,226 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,232 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,258 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 93 with the following transitions: [2018-12-09 08:48:55,258 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 08:48:55,259 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 08:48:55,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 08:48:55,387 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 08:48:55,388 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 08:48:55,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,389 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 08:48:55,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,389 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,395 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 08:48:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-12-09 08:48:55,448 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-12-09 08:48:55,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:55,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-12-09 08:48:55,518 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:55,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 08:48:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 08:48:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 08:48:55,518 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand 12 states. [2018-12-09 08:48:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:55,543 INFO L93 Difference]: Finished difference Result 121 states and 156 transitions. [2018-12-09 08:48:55,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 08:48:55,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2018-12-09 08:48:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:55,544 INFO L225 Difference]: With dead ends: 121 [2018-12-09 08:48:55,545 INFO L226 Difference]: Without dead ends: 75 [2018-12-09 08:48:55,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 08:48:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-09 08:48:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-12-09 08:48:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-09 08:48:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2018-12-09 08:48:55,551 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 92 [2018-12-09 08:48:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:55,551 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2018-12-09 08:48:55,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 08:48:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2018-12-09 08:48:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-12-09 08:48:55,552 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:55,552 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 10, 10, 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 08:48:55,552 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:55,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash -104745542, now seen corresponding path program 2 times [2018-12-09 08:48:55,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:55,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,553 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:55,562 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:55,562 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:55,562 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:55,569 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,598 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 08:48:55,598 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 08:48:55,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,598 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 08:48:55,604 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 08:48:55,623 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 08:48:55,623 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 08:48:55,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-12-09 08:48:55,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2018-12-09 08:48:55,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:55,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 08:48:55,683 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:55,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 08:48:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 08:48:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 08:48:55,683 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2018-12-09 08:48:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:55,708 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2018-12-09 08:48:55,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 08:48:55,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-12-09 08:48:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:55,709 INFO L225 Difference]: With dead ends: 117 [2018-12-09 08:48:55,709 INFO L226 Difference]: Without dead ends: 87 [2018-12-09 08:48:55,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 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 08:48:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-12-09 08:48:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-12-09 08:48:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-12-09 08:48:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2018-12-09 08:48:55,714 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 104 [2018-12-09 08:48:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:55,715 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2018-12-09 08:48:55,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 08:48:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2018-12-09 08:48:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-09 08:48:55,715 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:55,715 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 10, 10, 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 08:48:55,715 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:55,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash -585827552, now seen corresponding path program 3 times [2018-12-09 08:48:55,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:55,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:55,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,716 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:55,726 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:55,726 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:55,726 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:55,734 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,762 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 08:48:55,762 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 08:48:55,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,762 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,768 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 08:48:55,768 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 08:48:55,788 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 08:48:55,788 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 08:48:55,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-12-09 08:48:55,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 18 proven. 180 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-12-09 08:48:55,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:55,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 08:48:55,857 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:55,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 08:48:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 08:48:55,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 08:48:55,857 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 6 states. [2018-12-09 08:48:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:55,877 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2018-12-09 08:48:55,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 08:48:55,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-12-09 08:48:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:55,878 INFO L225 Difference]: With dead ends: 150 [2018-12-09 08:48:55,878 INFO L226 Difference]: Without dead ends: 96 [2018-12-09 08:48:55,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 215 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 08:48:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-12-09 08:48:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-12-09 08:48:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-12-09 08:48:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2018-12-09 08:48:55,884 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 110 [2018-12-09 08:48:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:55,884 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2018-12-09 08:48:55,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 08:48:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2018-12-09 08:48:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-12-09 08:48:55,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:55,885 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 12, 12, 10, 10, 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 08:48:55,885 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:55,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:55,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1315661188, now seen corresponding path program 4 times [2018-12-09 08:48:55,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:55,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:55,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:55,886 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:55,893 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:55,893 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:55,893 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/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 08:48:55,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,904 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,934 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 08:48:55,934 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 08:48:55,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:55,934 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 08:48:55,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:55,940 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 08:48:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:55,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 287 proven. 26 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-12-09 08:48:55,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 51 proven. 450 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-12-09 08:48:56,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:56,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-09 08:48:56,051 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:56,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 08:48:56,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 08:48:56,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 08:48:56,052 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2018-12-09 08:48:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:56,076 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2018-12-09 08:48:56,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 08:48:56,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2018-12-09 08:48:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:56,077 INFO L225 Difference]: With dead ends: 165 [2018-12-09 08:48:56,077 INFO L226 Difference]: Without dead ends: 102 [2018-12-09 08:48:56,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 263 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 08:48:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-12-09 08:48:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-12-09 08:48:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-09 08:48:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2018-12-09 08:48:56,086 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 137 [2018-12-09 08:48:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:56,086 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2018-12-09 08:48:56,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 08:48:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2018-12-09 08:48:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-12-09 08:48:56,088 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:56,088 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 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 08:48:56,088 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:56,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1171480068, now seen corresponding path program 5 times [2018-12-09 08:48:56,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:56,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:48:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:56,089 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:56,100 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:56,100 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:56,101 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 08:48:56,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:56,107 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:48:56,138 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 08:48:56,138 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 08:48:56,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 08:48:56,138 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 08:48:56,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 08:48:56,144 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 08:48:56,296 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 08:48:56,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 08:48:56,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:48:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 650 proven. 16 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-12-09 08:48:56,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 08:48:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2018-12-09 08:48:56,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 08:48:56,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-12-09 08:48:56,390 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 08:48:56,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 08:48:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 08:48:56,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 08:48:56,390 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 11 states. [2018-12-09 08:48:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:48:56,411 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2018-12-09 08:48:56,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 08:48:56,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 155 [2018-12-09 08:48:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:48:56,412 INFO L225 Difference]: With dead ends: 167 [2018-12-09 08:48:56,412 INFO L226 Difference]: Without dead ends: 122 [2018-12-09 08:48:56,412 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-09 08:48:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-12-09 08:48:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-12-09 08:48:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-12-09 08:48:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2018-12-09 08:48:56,419 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 155 [2018-12-09 08:48:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:48:56,419 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2018-12-09 08:48:56,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 08:48:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2018-12-09 08:48:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-12-09 08:48:56,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:48:56,421 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 9, 9, 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 08:48:56,421 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:48:56,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:48:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash -553175790, now seen corresponding path program 6 times [2018-12-09 08:48:56,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 08:48:56,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:56,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:56,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:48:56,422 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 08:48:56,429 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 08:48:56,429 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 08:48:56,429 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 08:48:56,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 08:48:56,436 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 08:48:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:48:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:48:57,206 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 08:48:57,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:48:57 BoogieIcfgContainer [2018-12-09 08:48:57,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 08:48:57,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 08:48:57,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 08:48:57,256 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 08:48:57,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:48:51" (3/4) ... [2018-12-09 08:48:57,258 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 08:48:57,341 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fe1d4879-06df-4b05-afbc-151005f15b4d/bin-2019/utaipan/witness.graphml [2018-12-09 08:48:57,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 08:48:57,342 INFO L168 Benchmark]: Toolchain (without parser) took 6503.44 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 361.8 MB). Free memory was 953.4 MB in the beginning and 1.2 GB in the end (delta: -268.9 MB). Peak memory consumption was 92.8 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 941.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.46 ms. Allocated memory is still 1.0 GB. Free memory was 941.6 MB in the beginning and 936.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: Boogie Preprocessor took 47.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: RCFGBuilder took 163.55 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,343 INFO L168 Benchmark]: TraceAbstraction took 6050.68 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 239.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -138.5 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,344 INFO L168 Benchmark]: Witness Printer took 85.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-12-09 08:48:57,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 941.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.46 ms. Allocated memory is still 1.0 GB. Free memory was 941.6 MB in the beginning and 936.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.55 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6050.68 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 239.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -138.5 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. * Witness Printer took 85.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 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[10]; VAL [x={14:0}] [L32] CALL init_nondet(x) VAL [x={14:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=6, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=7, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=8, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=9, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=10, x={14:0}, x={14:0}] [L6] COND FALSE !(i < 10) VAL [i=10, x={14:0}, x={14:0}] [L32] RET init_nondet(x) VAL [x={14:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={14:0}] [L38] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=2, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=2, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=2, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=1, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=1, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=1, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-3, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-3, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-3, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-2, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=0, x={14:0}] [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=0, temp=2147480730, x={14:0}] [L41] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=2, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=2, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=2, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=1, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=1, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=1, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-3, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-3, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-3, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-2, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=-2, x={14:0}, x={14:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=0, ret=0, temp=2147480730, x={14:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=5, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=6, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=7, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=8, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=9, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L43] COND FALSE !(i<10 -1) VAL [i=9, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L46] x[10 -1] = temp VAL [i=9, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L47] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-1, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=-1, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-1, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-5, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=-5, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-5, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-4, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-4, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-4, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-2147483652, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-2147483652, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-2147483652, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-536870913, cnt=4, i=10, ret=-2147483652, x={14:0}, x={14:0}] [L47] RET, EXPR rangesum(x) VAL [i=9, rangesum(x)=-536870913, ret=0, ret2=0, temp=-2147483648, x={14:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=9, ret=0, ret2=0, ret5=-536870913, temp=-2147483648, x={14:0}] [L50] __VERIFIER_error() VAL [i=9, ret=0, ret2=0, ret5=-536870913, temp=-2147483648, x={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. UNSAFE Result, 6.0s OverallTime, 14 OverallIterations, 30 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 412 SDtfs, 281 SDslu, 1279 SDs, 0 SdLazy, 145 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 1700 GetRequests, 1596 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=13, 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, 13 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1858 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1502 ConstructedInterpolants, 0 QuantifiedInterpolants, 184732 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1575 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 16 InterpolantComputations, 0 PerfectInterpolantSequences, 7365/8119 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...