./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/matrix_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e 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/loops/matrix_true-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 77bbd25ad99103bdffda3bd7f6a6e3c182ec06ae ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:17:38,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:17:38,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:17:38,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:17:38,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:17:38,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:17:38,751 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:17:38,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:17:38,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:17:38,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:17:38,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:17:38,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:17:38,758 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:17:38,759 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:17:38,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:17:38,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:17:38,763 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:17:38,765 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:17:38,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:17:38,770 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:17:38,771 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:17:38,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:17:38,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:17:38,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:17:38,776 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:17:38,777 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:17:38,779 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:17:38,780 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:17:38,781 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:17:38,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:17:38,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:17:38,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:17:38,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:17:38,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:17:38,785 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:17:38,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:17:38,787 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:17:38,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:17:38,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:17:38,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:17:38,804 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:17:38,805 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:17:38,805 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:17:38,805 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:17:38,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:17:38,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:17:38,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:17:38,808 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:17:38,808 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:17:38,808 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:17:38,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:17:38,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:17:38,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:17:38,810 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:17:38,810 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:17:38,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:17:38,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:17:38,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:17:38,812 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:17:38,812 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:17:38,812 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:17:38,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:17:38,812 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 -> 77bbd25ad99103bdffda3bd7f6a6e3c182ec06ae [2018-11-28 18:17:38,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:17:38,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:17:38,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:17:38,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:17:38,886 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:17:38,887 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/matrix_true-unreach-call_true-termination.i [2018-11-28 18:17:38,965 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5de5bbe/a02bd48202c44fe5bd0f116c90b48cbf/FLAGc9161b56d [2018-11-28 18:17:39,403 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:17:39,403 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/matrix_true-unreach-call_true-termination.i [2018-11-28 18:17:39,409 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5de5bbe/a02bd48202c44fe5bd0f116c90b48cbf/FLAGc9161b56d [2018-11-28 18:17:39,776 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5de5bbe/a02bd48202c44fe5bd0f116c90b48cbf [2018-11-28 18:17:39,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:17:39,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:17:39,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:39,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:17:39,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:17:39,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:39" (1/1) ... [2018-11-28 18:17:39,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151a95c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:39, skipping insertion in model container [2018-11-28 18:17:39,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:39" (1/1) ... [2018-11-28 18:17:39,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:17:39,818 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:17:40,058 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:40,067 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:17:40,108 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:40,148 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:17:40,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40 WrapperNode [2018-11-28 18:17:40,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:40,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:40,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:17:40,150 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:17:40,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:40,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:17:40,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:17:40,202 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:17:40,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (1/1) ... [2018-11-28 18:17:40,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:17:40,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:17:40,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:17:40,253 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:17:40,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (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 [2018-11-28 18:17:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:17:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:17:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:17:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:17:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:17:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:17:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:17:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:17:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:17:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:17:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:17:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:17:40,894 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:17:40,895 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:17:40,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:40 BoogieIcfgContainer [2018-11-28 18:17:40,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:17:40,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:17:40,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:17:40,902 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:17:40,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:17:39" (1/3) ... [2018-11-28 18:17:40,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:40, skipping insertion in model container [2018-11-28 18:17:40,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:40" (2/3) ... [2018-11-28 18:17:40,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:40, skipping insertion in model container [2018-11-28 18:17:40,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:40" (3/3) ... [2018-11-28 18:17:40,906 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_true-unreach-call_true-termination.i [2018-11-28 18:17:40,918 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:17:40,929 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:17:40,950 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:17:40,983 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:17:40,984 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:17:40,984 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:17:40,984 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:17:40,985 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:17:40,985 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:17:40,985 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:17:40,985 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:17:40,986 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:17:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 18:17:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:17:41,012 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:41,014 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:41,016 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:41,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1330517862, now seen corresponding path program 1 times [2018-11-28 18:17:41,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:41,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:41,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,117 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:41,118 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:41,118 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 [2018-11-28 18:17:41,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:41,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:41,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:41,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:17:41,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:17:41,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:17:41,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:41,241 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-11-28 18:17:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:41,265 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2018-11-28 18:17:41,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:17:41,266 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-28 18:17:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:41,275 INFO L225 Difference]: With dead ends: 42 [2018-11-28 18:17:41,275 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 18:17:41,279 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 18:17:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 18:17:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 18:17:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-28 18:17:41,321 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2018-11-28 18:17:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:41,321 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-28 18:17:41,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:17:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-28 18:17:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:17:41,322 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:41,323 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:41,323 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:41,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:41,324 INFO L82 PathProgramCache]: Analyzing trace with hash 672047389, now seen corresponding path program 1 times [2018-11-28 18:17:41,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:41,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:41,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,334 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:41,334 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:41,334 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 [2018-11-28 18:17:41,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:41,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:41,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:41,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:17:41,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:17:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:17:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:17:41,457 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-11-28 18:17:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:41,535 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-11-28 18:17:41,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:17:41,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-28 18:17:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:41,538 INFO L225 Difference]: With dead ends: 28 [2018-11-28 18:17:41,538 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 18:17:41,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:17:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 18:17:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-28 18:17:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 18:17:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-28 18:17:41,546 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2018-11-28 18:17:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:41,546 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-28 18:17:41,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:17:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-28 18:17:41,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 18:17:41,547 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:41,547 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:41,549 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:41,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash -830834987, now seen corresponding path program 1 times [2018-11-28 18:17:41,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:41,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:41,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:41,560 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:41,560 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:41,560 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 [2018-11-28 18:17:41,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:41,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:41,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:41,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:17:41,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:17:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:17:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:41,760 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-11-28 18:17:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:42,085 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-28 18:17:42,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:17:42,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-28 18:17:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:42,086 INFO L225 Difference]: With dead ends: 36 [2018-11-28 18:17:42,086 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 18:17:42,087 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:17:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 18:17:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-11-28 18:17:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 18:17:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-28 18:17:42,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2018-11-28 18:17:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:42,099 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-28 18:17:42,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:17:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-28 18:17:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:17:42,101 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:42,101 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:42,102 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:42,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:42,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1529445450, now seen corresponding path program 1 times [2018-11-28 18:17:42,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:42,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:42,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:42,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:42,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:42,115 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:42,119 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:42,120 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 [2018-11-28 18:17:42,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:42,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:42,317 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-28 18:17:42,318 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-28 18:17:43,021 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-11-28 18:17:43,022 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,034 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,057 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,058 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 16 variables, input treesize:477, output treesize:13 [2018-11-28 18:17:43,395 WARN L180 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-11-28 18:17:43,535 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-28 18:17:43,539 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-11-28 18:17:43,543 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,546 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,552 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:43,552 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-11-28 18:17:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:43,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:43,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-28 18:17:43,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 18:17:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 18:17:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:17:43,620 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 11 states. [2018-11-28 18:17:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:43,871 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-28 18:17:43,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:17:43,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-11-28 18:17:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:43,874 INFO L225 Difference]: With dead ends: 44 [2018-11-28 18:17:43,874 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 18:17:43,875 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:17:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 18:17:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-28 18:17:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 18:17:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-28 18:17:43,880 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2018-11-28 18:17:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:43,880 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-28 18:17:43,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 18:17:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-11-28 18:17:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:17:43,881 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:43,882 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:43,882 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:43,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1922472460, now seen corresponding path program 1 times [2018-11-28 18:17:43,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:43,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:43,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:43,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:43,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:43,890 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:43,890 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:43,891 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 [2018-11-28 18:17:43,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:43,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:43,994 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-28 18:17:43,994 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,014 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2018-11-28 18:17:44,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-11-28 18:17:44,019 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,023 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,034 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,035 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:82, output treesize:17 [2018-11-28 18:17:44,098 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-28 18:17:44,104 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-28 18:17:44,105 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,115 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:44,117 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-28 18:17:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:44,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:44,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-28 18:17:44,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:17:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:17:44,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:17:44,180 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2018-11-28 18:17:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:44,633 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2018-11-28 18:17:44,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 18:17:44,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-11-28 18:17:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:44,636 INFO L225 Difference]: With dead ends: 41 [2018-11-28 18:17:44,636 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:17:44,637 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:17:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:17:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2018-11-28 18:17:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 18:17:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-28 18:17:44,644 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2018-11-28 18:17:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:44,644 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-28 18:17:44,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:17:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-28 18:17:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:17:44,645 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:44,645 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:44,646 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:44,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:44,646 INFO L82 PathProgramCache]: Analyzing trace with hash -422232267, now seen corresponding path program 2 times [2018-11-28 18:17:44,646 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:44,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:44,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:44,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:44,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:44,653 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:44,653 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:44,654 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 [2018-11-28 18:17:44,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:17:44,692 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:17:44,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:17:44,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:44,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:44,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-28 18:17:44,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:17:44,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:17:44,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:17:44,763 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-28 18:17:44,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:44,795 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-11-28 18:17:44,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:17:44,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-11-28 18:17:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:44,796 INFO L225 Difference]: With dead ends: 42 [2018-11-28 18:17:44,796 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 18:17:44,797 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:17:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 18:17:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-28 18:17:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 18:17:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-28 18:17:44,802 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-11-28 18:17:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:44,803 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-28 18:17:44,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:17:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-28 18:17:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:17:44,804 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:44,804 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:44,804 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:44,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:44,805 INFO L82 PathProgramCache]: Analyzing trace with hash -781579443, now seen corresponding path program 1 times [2018-11-28 18:17:44,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:44,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:44,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:44,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:17:44,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:44,812 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 18:17:44,812 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 18:17:44,812 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 [2018-11-28 18:17:44,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:44,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 18:17:44,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:17:44,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-11-28 18:17:44,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:17:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:17:44,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:44,918 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-11-28 18:17:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:44,941 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-28 18:17:44,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:17:44,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 18:17:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:44,946 INFO L225 Difference]: With dead ends: 25 [2018-11-28 18:17:44,946 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:17:44,946 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:17:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:17:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:17:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:17:44,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-28 18:17:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:44,947 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:17:44,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:17:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:17:44,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:17:44,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:17:45,293 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-11-28 18:17:45,456 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:45,456 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:45,456 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:45,456 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:45,456 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:17:45,456 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:45,457 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:45,457 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2018-11-28 18:17:45,457 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 26) no Hoare annotation was computed. [2018-11-28 18:17:45,457 INFO L444 ceAbstractionStarter]: At program point L19-3(lines 19 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0))) (or (and .cse0 (= main_~j~0 0) (= 1 main_~N_LIN~0)) (and (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) .cse0 (= main_~j~0 1)))) [2018-11-28 18:17:45,457 INFO L448 ceAbstractionStarter]: For program point L19-4(lines 19 26) no Hoare annotation was computed. [2018-11-28 18:17:45,457 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2018-11-28 18:17:45,457 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2018-11-28 18:17:45,459 INFO L444 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|))) (or (and (<= (+ |main_#t~mem6| 1) main_~maior~0) (<= (+ .cse0 1) main_~maior~0)) (and (<= |main_#t~mem6| main_~maior~0) (<= .cse0 main_~maior~0) (= 1 main_~N_COL~0) (= main_~j~0 1)))) [2018-11-28 18:17:45,459 INFO L448 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-28 18:17:45,459 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 25) no Hoare annotation was computed. [2018-11-28 18:17:45,459 INFO L448 ceAbstractionStarter]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2018-11-28 18:17:45,459 INFO L444 ceAbstractionStarter]: At program point L20-3(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse1 (= main_~j~0 0)) (.cse2 (= 1 main_~N_LIN~0))) (or (and (= main_~k~0 0) .cse0 .cse1 .cse2) (and (= main_~k~0 1) .cse0 .cse1 .cse2 (<= (select (select |#memory_int| |main_~#matriz~0.base|) (+ |main_~#matriz~0.offset| (* 4 (mod main_~j~0 4294967296)))) main_~maior~0)))) [2018-11-28 18:17:45,459 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:17:45,460 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:17:45,461 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:17:45,461 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:17:45,461 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:17:45,461 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:17:45,468 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,473 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,474 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,475 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:17:45 BoogieIcfgContainer [2018-11-28 18:17:45,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:17:45,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:17:45,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:17:45,478 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:17:45,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:40" (3/4) ... [2018-11-28 18:17:45,483 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:17:45,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:17:45,490 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:17:45,490 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:17:45,495 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-28 18:17:45,495 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 18:17:45,495 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:17:45,546 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:17:45,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:17:45,547 INFO L168 Benchmark]: Toolchain (without parser) took 5767.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 952.7 MB in the beginning and 807.6 MB in the end (delta: 145.1 MB). Peak memory consumption was 235.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:45,549 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:45,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.01 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:45,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:45,550 INFO L168 Benchmark]: Boogie Preprocessor took 49.91 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:45,551 INFO L168 Benchmark]: RCFGBuilder took 643.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:45,551 INFO L168 Benchmark]: TraceAbstraction took 4579.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 807.6 MB in the end (delta: 257.6 MB). Peak memory consumption was 257.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:45,552 INFO L168 Benchmark]: Witness Printer took 69.03 ms. Allocated memory is still 1.1 GB. Free memory is still 807.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:45,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.01 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.91 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 643.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4579.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 807.6 MB in the end (delta: 257.6 MB). Peak memory consumption was 257.6 MB. Max. memory is 11.5 GB. * Witness Printer took 69.03 ms. Allocated memory is still 1.1 GB. Free memory is still 807.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant [2018-11-28 18:17:45,563 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,563 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((k == 0 && 1 == N_COL) && j == 0) && 1 == N_LIN) || ((((k == 1 && 1 == N_COL) && j == 0) && 1 == N_LIN) && unknown-#memory_int-unknown[matriz][matriz + 4 * (j % 4294967296)] <= maior) - InvariantResult [Line: 19]: Loop Invariant [2018-11-28 18:17:45,564 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 18:17:45,564 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((1 == N_COL && j == 0) && 1 == N_LIN) || ((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == N_COL) && j == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 104 SDtfs, 58 SDslu, 214 SDs, 0 SdLazy, 263 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 103 HoareAnnotationTreeSize, 16 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 7362 SizeOfPredicates, 30 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/23 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...