./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 279fae57395782089eff32ec1396d1726d808c7f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2018-12-30 13:53:12,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-30 13:53:12,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-30 13:53:12,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-30 13:53:12,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-30 13:53:12,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-30 13:53:12,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-30 13:53:12,883 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-30 13:53:12,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-30 13:53:12,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-30 13:53:12,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-30 13:53:12,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-30 13:53:12,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-30 13:53:12,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-30 13:53:12,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-30 13:53:12,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-30 13:53:12,891 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-30 13:53:12,893 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-30 13:53:12,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-30 13:53:12,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-30 13:53:12,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-30 13:53:12,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-30 13:53:12,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-30 13:53:12,902 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-30 13:53:12,903 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-30 13:53:12,903 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-30 13:53:12,904 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-30 13:53:12,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-30 13:53:12,906 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-30 13:53:12,907 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-30 13:53:12,908 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-30 13:53:12,909 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-30 13:53:12,909 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-30 13:53:12,909 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-30 13:53:12,911 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-30 13:53:12,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-30 13:53:12,912 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-30 13:53:12,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-30 13:53:12,940 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-30 13:53:12,941 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-30 13:53:12,942 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-30 13:53:12,942 INFO L133 SettingsManager]: * Use SBE=true [2018-12-30 13:53:12,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-30 13:53:12,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-30 13:53:12,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-30 13:53:12,944 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-30 13:53:12,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-30 13:53:12,944 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-30 13:53:12,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-30 13:53:12,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-30 13:53:12,946 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-30 13:53:12,947 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-30 13:53:12,947 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-30 13:53:12,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-30 13:53:12,947 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-30 13:53:12,947 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-30 13:53:12,948 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-30 13:53:12,949 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-30 13:53:12,949 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-30 13:53:12,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-30 13:53:12,949 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 279fae57395782089eff32ec1396d1726d808c7f [2018-12-30 13:53:12,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-30 13:53:13,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-30 13:53:13,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-30 13:53:13,017 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-30 13:53:13,018 INFO L276 PluginConnector]: CDTParser initialized [2018-12-30 13:53:13,020 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-12-30 13:53:13,084 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c162ad7c/160de5ecce494a97b37556838e06dc35/FLAG86c92130e [2018-12-30 13:53:13,484 INFO L307 CDTParser]: Found 1 translation units. [2018-12-30 13:53:13,485 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-12-30 13:53:13,492 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c162ad7c/160de5ecce494a97b37556838e06dc35/FLAG86c92130e [2018-12-30 13:53:13,876 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c162ad7c/160de5ecce494a97b37556838e06dc35 [2018-12-30 13:53:13,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-30 13:53:13,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-30 13:53:13,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-30 13:53:13,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-30 13:53:13,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-30 13:53:13,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 01:53:13" (1/1) ... [2018-12-30 13:53:13,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28dd9cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:13, skipping insertion in model container [2018-12-30 13:53:13,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 01:53:13" (1/1) ... [2018-12-30 13:53:13,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-30 13:53:13,922 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-30 13:53:14,144 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 13:53:14,160 INFO L191 MainTranslator]: Completed pre-run [2018-12-30 13:53:14,210 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 13:53:14,231 INFO L195 MainTranslator]: Completed translation [2018-12-30 13:53:14,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14 WrapperNode [2018-12-30 13:53:14,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-30 13:53:14,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-30 13:53:14,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-30 13:53:14,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-30 13:53:14,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-30 13:53:14,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-30 13:53:14,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-30 13:53:14,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-30 13:53:14,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... [2018-12-30 13:53:14,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-30 13:53:14,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-30 13:53:14,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-30 13:53:14,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-30 13:53:14,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-30 13:53:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-30 13:53:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-30 13:53:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-30 13:53:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-30 13:53:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-30 13:53:15,057 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-30 13:53:15,057 INFO L280 CfgBuilder]: Removed 17 assue(true) statements. [2018-12-30 13:53:15,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 01:53:15 BoogieIcfgContainer [2018-12-30 13:53:15,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-30 13:53:15,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-30 13:53:15,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-30 13:53:15,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-30 13:53:15,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.12 01:53:13" (1/3) ... [2018-12-30 13:53:15,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23533a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 01:53:15, skipping insertion in model container [2018-12-30 13:53:15,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 01:53:14" (2/3) ... [2018-12-30 13:53:15,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23533a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 01:53:15, skipping insertion in model container [2018-12-30 13:53:15,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 01:53:15" (3/3) ... [2018-12-30 13:53:15,065 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum_false-unreach-call_true-termination.i [2018-12-30 13:53:15,074 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-30 13:53:15,082 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-30 13:53:15,100 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-30 13:53:15,132 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-30 13:53:15,132 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-30 13:53:15,132 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-30 13:53:15,133 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-30 13:53:15,133 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-30 13:53:15,133 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-30 13:53:15,133 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-30 13:53:15,133 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-30 13:53:15,134 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-30 13:53:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-30 13:53:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-30 13:53:15,153 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:15,154 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:15,156 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1829542603, now seen corresponding path program 1 times [2018-12-30 13:53:15,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:15,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:15,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:15,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 13:53:15,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:15,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-30 13:53:15,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-30 13:53:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-30 13:53:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-30 13:53:15,313 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-30 13:53:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:15,334 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2018-12-30 13:53:15,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-30 13:53:15,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-30 13:53:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:15,346 INFO L225 Difference]: With dead ends: 59 [2018-12-30 13:53:15,346 INFO L226 Difference]: Without dead ends: 27 [2018-12-30 13:53:15,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-30 13:53:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-30 13:53:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-30 13:53:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-30 13:53:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-12-30 13:53:15,388 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 18 [2018-12-30 13:53:15,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:15,388 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2018-12-30 13:53:15,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-30 13:53:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2018-12-30 13:53:15,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-30 13:53:15,390 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:15,390 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:15,390 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:15,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:15,390 INFO L82 PathProgramCache]: Analyzing trace with hash -97699309, now seen corresponding path program 1 times [2018-12-30 13:53:15,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:15,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:15,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:15,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,407 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:15,407 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:15,407 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:15,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:15,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 13:53:15,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:15,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 13:53:15,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 13:53:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 13:53:15,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 13:53:15,546 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 3 states. [2018-12-30 13:53:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:15,842 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2018-12-30 13:53:15,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 13:53:15,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-30 13:53:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:15,843 INFO L225 Difference]: With dead ends: 65 [2018-12-30 13:53:15,844 INFO L226 Difference]: Without dead ends: 48 [2018-12-30 13:53:15,844 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 13:53:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-30 13:53:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2018-12-30 13:53:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-30 13:53:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2018-12-30 13:53:15,853 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 18 [2018-12-30 13:53:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:15,853 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-12-30 13:53:15,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 13:53:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2018-12-30 13:53:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-30 13:53:15,854 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:15,855 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:15,855 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash 840584081, now seen corresponding path program 1 times [2018-12-30 13:53:15,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:15,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:15,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 13:53:16,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:16,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-30 13:53:16,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-30 13:53:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-30 13:53:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-30 13:53:16,175 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 8 states. [2018-12-30 13:53:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:16,415 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2018-12-30 13:53:16,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-30 13:53:16,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-12-30 13:53:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:16,421 INFO L225 Difference]: With dead ends: 96 [2018-12-30 13:53:16,421 INFO L226 Difference]: Without dead ends: 91 [2018-12-30 13:53:16,422 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-12-30 13:53:16,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-12-30 13:53:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2018-12-30 13:53:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-30 13:53:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2018-12-30 13:53:16,434 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 18 [2018-12-30 13:53:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:16,434 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2018-12-30 13:53:16,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-30 13:53:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2018-12-30 13:53:16,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-30 13:53:16,436 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:16,436 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:16,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:16,437 INFO L82 PathProgramCache]: Analyzing trace with hash -995174774, now seen corresponding path program 1 times [2018-12-30 13:53:16,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:16,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:16,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:16,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:16,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:16,460 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:16,461 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:16,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:16,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:16,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-30 13:53:16,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:16,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 13:53:16,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 13:53:16,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 13:53:16,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 13:53:16,654 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand 3 states. [2018-12-30 13:53:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:16,831 INFO L93 Difference]: Finished difference Result 115 states and 165 transitions. [2018-12-30 13:53:16,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 13:53:16,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-30 13:53:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:16,835 INFO L225 Difference]: With dead ends: 115 [2018-12-30 13:53:16,835 INFO L226 Difference]: Without dead ends: 61 [2018-12-30 13:53:16,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 13:53:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-30 13:53:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-12-30 13:53:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-30 13:53:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2018-12-30 13:53:16,850 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 85 transitions. Word has length 21 [2018-12-30 13:53:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:16,850 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 85 transitions. [2018-12-30 13:53:16,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 13:53:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 85 transitions. [2018-12-30 13:53:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-30 13:53:16,852 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:16,852 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:16,852 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2100366548, now seen corresponding path program 1 times [2018-12-30 13:53:16,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:16,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:16,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:16,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:16,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:16,875 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:16,876 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:16,876 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 13:53:16,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:16,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-30 13:53:17,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:17,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-12-30 13:53:17,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-30 13:53:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-30 13:53:17,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:17,050 INFO L87 Difference]: Start difference. First operand 60 states and 85 transitions. Second operand 4 states. [2018-12-30 13:53:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:17,411 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2018-12-30 13:53:17,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-30 13:53:17,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-30 13:53:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:17,413 INFO L225 Difference]: With dead ends: 117 [2018-12-30 13:53:17,413 INFO L226 Difference]: Without dead ends: 63 [2018-12-30 13:53:17,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-30 13:53:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-12-30 13:53:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-30 13:53:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2018-12-30 13:53:17,421 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 23 [2018-12-30 13:53:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:17,421 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2018-12-30 13:53:17,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-30 13:53:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2018-12-30 13:53:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-30 13:53:17,423 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:17,423 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:17,423 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:17,424 INFO L82 PathProgramCache]: Analyzing trace with hash 962228046, now seen corresponding path program 2 times [2018-12-30 13:53:17,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:17,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:17,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:17,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:17,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:17,443 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:17,444 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:17,444 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 13:53:17,455 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-30 13:53:17,481 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-30 13:53:17,482 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-30 13:53:17,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-30 13:53:17,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:17,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-30 13:53:17,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-30 13:53:17,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-30 13:53:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:17,557 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand 4 states. [2018-12-30 13:53:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:17,784 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2018-12-30 13:53:17,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-30 13:53:17,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-30 13:53:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:17,788 INFO L225 Difference]: With dead ends: 127 [2018-12-30 13:53:17,788 INFO L226 Difference]: Without dead ends: 77 [2018-12-30 13:53:17,788 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-30 13:53:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2018-12-30 13:53:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-12-30 13:53:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2018-12-30 13:53:17,799 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 25 [2018-12-30 13:53:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:17,800 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2018-12-30 13:53:17,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-30 13:53:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2018-12-30 13:53:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-30 13:53:17,801 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:17,801 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-12-30 13:53:17,803 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1979262774, now seen corresponding path program 1 times [2018-12-30 13:53:17,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:17,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:17,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:17,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-30 13:53:17,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:17,829 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:17,829 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:17,829 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:17,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:17,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-30 13:53:18,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:18,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-30 13:53:18,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-30 13:53:18,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-30 13:53:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-30 13:53:18,260 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand 5 states. [2018-12-30 13:53:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:18,463 INFO L93 Difference]: Finished difference Result 150 states and 206 transitions. [2018-12-30 13:53:18,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-30 13:53:18,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-12-30 13:53:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:18,465 INFO L225 Difference]: With dead ends: 150 [2018-12-30 13:53:18,465 INFO L226 Difference]: Without dead ends: 92 [2018-12-30 13:53:18,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-30 13:53:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-12-30 13:53:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2018-12-30 13:53:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-12-30 13:53:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2018-12-30 13:53:18,475 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 34 [2018-12-30 13:53:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:18,476 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2018-12-30 13:53:18,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-30 13:53:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2018-12-30 13:53:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-30 13:53:18,477 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:18,478 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:18,478 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash -387145522, now seen corresponding path program 2 times [2018-12-30 13:53:18,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:18,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:18,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:18,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:18,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:18,501 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:18,502 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:18,502 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 13:53:18,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-30 13:53:18,547 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-30 13:53:18,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-30 13:53:18,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-30 13:53:18,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 13:53:18,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-30 13:53:18,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-30 13:53:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-30 13:53:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:18,643 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand 4 states. [2018-12-30 13:53:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:18,736 INFO L93 Difference]: Finished difference Result 122 states and 156 transitions. [2018-12-30 13:53:18,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-30 13:53:18,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-12-30 13:53:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:18,738 INFO L225 Difference]: With dead ends: 122 [2018-12-30 13:53:18,738 INFO L226 Difference]: Without dead ends: 91 [2018-12-30 13:53:18,739 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-30 13:53:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-12-30 13:53:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2018-12-30 13:53:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-12-30 13:53:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2018-12-30 13:53:18,749 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 43 [2018-12-30 13:53:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:18,749 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2018-12-30 13:53:18,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-30 13:53:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2018-12-30 13:53:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-30 13:53:18,751 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:18,751 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:18,751 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:18,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1297182544, now seen corresponding path program 1 times [2018-12-30 13:53:18,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:18,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:18,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:18,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-30 13:53:18,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:18,774 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:18,774 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:18,774 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:18,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:18,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-30 13:53:19,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:19,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-12-30 13:53:19,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-30 13:53:19,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-30 13:53:19,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-30 13:53:19,066 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 9 states. [2018-12-30 13:53:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:19,489 INFO L93 Difference]: Finished difference Result 197 states and 250 transitions. [2018-12-30 13:53:19,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-30 13:53:19,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2018-12-30 13:53:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:19,491 INFO L225 Difference]: With dead ends: 197 [2018-12-30 13:53:19,492 INFO L226 Difference]: Without dead ends: 92 [2018-12-30 13:53:19,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-12-30 13:53:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-12-30 13:53:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-12-30 13:53:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-12-30 13:53:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2018-12-30 13:53:19,502 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 45 [2018-12-30 13:53:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:19,502 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2018-12-30 13:53:19,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-30 13:53:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2018-12-30 13:53:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-30 13:53:19,505 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:19,506 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:19,506 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash -3446958, now seen corresponding path program 2 times [2018-12-30 13:53:19,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:19,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:19,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:19,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:19,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:19,537 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:19,537 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:19,537 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 13:53:19,568 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-30 13:53:19,604 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-30 13:53:19,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-30 13:53:19,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-30 13:53:19,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:19,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-12-30 13:53:19,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-30 13:53:19,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-30 13:53:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-30 13:53:19,828 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand 9 states. [2018-12-30 13:53:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:20,107 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2018-12-30 13:53:20,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-30 13:53:20,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2018-12-30 13:53:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:20,109 INFO L225 Difference]: With dead ends: 171 [2018-12-30 13:53:20,109 INFO L226 Difference]: Without dead ends: 116 [2018-12-30 13:53:20,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-12-30 13:53:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-12-30 13:53:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2018-12-30 13:53:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-12-30 13:53:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2018-12-30 13:53:20,119 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 47 [2018-12-30 13:53:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:20,120 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2018-12-30 13:53:20,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-30 13:53:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2018-12-30 13:53:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-30 13:53:20,121 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:20,122 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-12-30 13:53:20,122 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash -384159915, now seen corresponding path program 1 times [2018-12-30 13:53:20,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:20,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:20,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:20,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-30 13:53:20,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:20,159 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:20,160 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:20,160 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:20,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 13:53:20,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-30 13:53:20,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:20,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-12-30 13:53:20,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-30 13:53:20,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-30 13:53:20,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-30 13:53:20,306 INFO L87 Difference]: Start difference. First operand 99 states and 124 transitions. Second operand 8 states. [2018-12-30 13:53:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:20,453 INFO L93 Difference]: Finished difference Result 138 states and 172 transitions. [2018-12-30 13:53:20,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-30 13:53:20,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2018-12-30 13:53:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:20,456 INFO L225 Difference]: With dead ends: 138 [2018-12-30 13:53:20,456 INFO L226 Difference]: Without dead ends: 105 [2018-12-30 13:53:20,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-12-30 13:53:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-12-30 13:53:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2018-12-30 13:53:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-12-30 13:53:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2018-12-30 13:53:20,465 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 53 [2018-12-30 13:53:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:20,465 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2018-12-30 13:53:20,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-30 13:53:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2018-12-30 13:53:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-30 13:53:20,467 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:20,467 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:20,467 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1685231241, now seen corresponding path program 2 times [2018-12-30 13:53:20,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:20,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:20,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:20,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:20,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:20,483 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:20,483 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:20,483 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 13:53:20,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-30 13:53:20,538 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-30 13:53:20,538 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-30 13:53:20,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 13:53:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-12-30 13:53:20,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 13:53:20,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-12-30 13:53:20,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-30 13:53:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-30 13:53:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-30 13:53:20,926 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand 10 states. [2018-12-30 13:53:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 13:53:21,391 INFO L93 Difference]: Finished difference Result 272 states and 342 transitions. [2018-12-30 13:53:21,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-30 13:53:21,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-12-30 13:53:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 13:53:21,394 INFO L225 Difference]: With dead ends: 272 [2018-12-30 13:53:21,394 INFO L226 Difference]: Without dead ends: 187 [2018-12-30 13:53:21,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-12-30 13:53:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-12-30 13:53:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 175. [2018-12-30 13:53:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-12-30 13:53:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2018-12-30 13:53:21,407 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 55 [2018-12-30 13:53:21,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 13:53:21,407 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2018-12-30 13:53:21,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-30 13:53:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2018-12-30 13:53:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-30 13:53:21,409 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 13:53:21,410 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 13:53:21,410 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 13:53:21,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 13:53:21,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1875846409, now seen corresponding path program 1 times [2018-12-30 13:53:21,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 13:53:21,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 13:53:21,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:21,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-30 13:53:21,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 13:53:21,421 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 13:53:21,422 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 13:53:21,422 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-30 13:53:21,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 13:53:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-30 13:53:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-30 13:53:21,679 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-30 13:53:21,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.12 01:53:21 BoogieIcfgContainer [2018-12-30 13:53:21,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-30 13:53:21,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-30 13:53:21,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-30 13:53:21,775 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-30 13:53:21,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 01:53:15" (3/4) ... [2018-12-30 13:53:21,779 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-30 13:53:21,870 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-30 13:53:21,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-30 13:53:21,871 INFO L168 Benchmark]: Toolchain (without parser) took 7990.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 95.1 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,873 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 13:53:21,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.35 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.07 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,875 INFO L168 Benchmark]: Boogie Preprocessor took 106.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,875 INFO L168 Benchmark]: RCFGBuilder took 635.49 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,876 INFO L168 Benchmark]: TraceAbstraction took 6715.85 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.3 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,877 INFO L168 Benchmark]: Witness Printer took 95.36 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-12-30 13:53:21,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.35 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.07 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 106.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 635.49 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6715.85 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.3 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. * Witness Printer took 95.36 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 53]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L6] int i; [L7] i = 0 VAL [N=3] [L7] COND TRUE i < N [L8] x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [N=3] [L7] COND TRUE i < N [L8] x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [N=3] [L7] COND TRUE i < N [L8] x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [N=3] [L7] COND FALSE !(i < N) VAL [N=3] [L36] int temp; [L37] int ret; [L38] int ret2; [L39] int ret5; [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND FALSE !(i > N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND FALSE !(i > N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND TRUE i > N/2 [L20] EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [N=3] [L18] i++ VAL [N=3] [L18] COND FALSE !(i < N) VAL [N=3] [L24] COND TRUE cnt !=0 [L25] return ret / cnt; VAL [N=3] [L41] ret = rangesum(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND FALSE !(i > N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND FALSE !(i > N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND TRUE i > N/2 [L20] EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [N=3] [L18] i++ VAL [N=3] [L18] COND FALSE !(i < N) VAL [N=3] [L24] COND TRUE cnt !=0 [L25] return ret / cnt; VAL [N=3] [L44] ret2 = rangesum(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [N=3] [L46] COND TRUE i N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND FALSE !(i > N/2) VAL [N=3] [L18] i++ VAL [N=3] [L18] COND TRUE i < N VAL [N=3] [L19] COND TRUE i > N/2 [L20] EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [N=3] [L18] i++ VAL [N=3] [L18] COND FALSE !(i < N) VAL [N=3] [L24] COND TRUE cnt !=0 [L25] return ret / cnt; VAL [N=3] [L50] ret5 = rangesum(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [N=3] [L53] __VERIFIER_error() VAL [N=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 6.6s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 302 SDtfs, 579 SDslu, 411 SDs, 0 SdLazy, 718 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 87 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 455 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 37966 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1402 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 168/199 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...