./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_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/loop-acceleration/array_true-unreach-call3_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 4090a90876c90ba415ea4bea59e2b23309410708 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:19:11,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:19:11,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:19:11,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:19:11,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:19:11,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:19:11,123 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:19:11,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:19:11,127 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:19:11,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:19:11,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:19:11,130 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:19:11,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:19:11,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:19:11,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:19:11,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:19:11,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:19:11,137 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:19:11,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:19:11,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:19:11,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:19:11,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:19:11,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:19:11,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:19:11,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:19:11,149 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:19:11,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:19:11,151 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:19:11,152 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:19:11,153 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:19:11,154 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:19:11,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:19:11,155 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:19:11,155 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:19:11,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:19:11,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:19:11,158 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:19:11,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:19:11,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:19:11,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:19:11,182 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:19:11,182 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:19:11,182 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:19:11,182 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:19:11,183 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:19:11,184 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:19:11,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:19:11,184 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:19:11,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:19:11,184 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:19:11,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:19:11,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:19:11,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:19:11,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:19:11,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:19:11,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:19:11,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:19:11,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:19:11,189 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:19:11,189 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:19:11,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:19:11,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:19:11,189 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 -> 4090a90876c90ba415ea4bea59e2b23309410708 [2018-11-28 18:19:11,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:19:11,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:19:11,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:19:11,271 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:19:11,271 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:19:11,272 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-28 18:19:11,343 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b276c96be/b6b04b2f680e43be8d958540df637c4a/FLAG272c98a27 [2018-11-28 18:19:11,825 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:19:11,828 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-28 18:19:11,836 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b276c96be/b6b04b2f680e43be8d958540df637c4a/FLAG272c98a27 [2018-11-28 18:19:12,152 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b276c96be/b6b04b2f680e43be8d958540df637c4a [2018-11-28 18:19:12,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:19:12,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:19:12,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:19:12,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:19:12,164 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:19:12,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f79cd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12, skipping insertion in model container [2018-11-28 18:19:12,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:19:12,200 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:19:12,447 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:19:12,451 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:19:12,478 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:19:12,508 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:19:12,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12 WrapperNode [2018-11-28 18:19:12,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:19:12,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:19:12,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:19:12,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:19:12,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:19:12,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:19:12,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:19:12,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:19:12,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (1/1) ... [2018-11-28 18:19:12,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:19:12,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:19:12,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:19:12,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:19:12,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (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 18:19:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:19:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:19:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:19:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:19:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:19:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:19:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:19:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:19:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:19:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:19:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:19:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:19:13,107 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:19:13,107 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:19:13,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:13 BoogieIcfgContainer [2018-11-28 18:19:13,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:19:13,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:19:13,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:19:13,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:19:13,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:19:12" (1/3) ... [2018-11-28 18:19:13,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7737f06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:19:13, skipping insertion in model container [2018-11-28 18:19:13,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:12" (2/3) ... [2018-11-28 18:19:13,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7737f06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:19:13, skipping insertion in model container [2018-11-28 18:19:13,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:13" (3/3) ... [2018-11-28 18:19:13,122 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-11-28 18:19:13,134 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:19:13,142 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:19:13,161 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:19:13,199 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:19:13,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:19:13,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:19:13,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:19:13,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:19:13,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:19:13,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:19:13,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:19:13,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:19:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-28 18:19:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:19:13,225 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:13,226 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:13,228 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:13,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:13,234 INFO L82 PathProgramCache]: Analyzing trace with hash -413900697, now seen corresponding path program 1 times [2018-11-28 18:19:13,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:13,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:13,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:13,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:13,361 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 18:19:13,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:19:13,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:19:13,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:19:13,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:19:13,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:19:13,386 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-28 18:19:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:13,406 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-11-28 18:19:13,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:19:13,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-28 18:19:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:13,417 INFO L225 Difference]: With dead ends: 42 [2018-11-28 18:19:13,417 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 18:19:13,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:19:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 18:19:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 18:19:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 18:19:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-28 18:19:13,463 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-11-28 18:19:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:13,463 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-28 18:19:13,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:19:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-28 18:19:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:19:13,464 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:13,464 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:13,465 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:13,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2053026861, now seen corresponding path program 1 times [2018-11-28 18:19:13,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:13,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:13,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:13,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:13,536 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 18:19:13,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:19:13,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:19:13,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:19:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:19:13,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:19:13,539 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-28 18:19:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:13,630 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-11-28 18:19:13,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:19:13,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 18:19:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:13,634 INFO L225 Difference]: With dead ends: 35 [2018-11-28 18:19:13,634 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 18:19:13,635 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:19:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 18:19:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-28 18:19:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 18:19:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-28 18:19:13,643 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-11-28 18:19:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:13,643 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-28 18:19:13,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:19:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-11-28 18:19:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:19:13,644 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:13,644 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:13,645 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:13,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:13,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1766388751, now seen corresponding path program 1 times [2018-11-28 18:19:13,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:13,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:13,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:13,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:19:13,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:19:13,738 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:19:13,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:13,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:19:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:19:13,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:19:13,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 18:19:13,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:19:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:19:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:19:13,881 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-11-28 18:19:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:14,059 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-11-28 18:19:14,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:19:14,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 18:19:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:14,062 INFO L225 Difference]: With dead ends: 45 [2018-11-28 18:19:14,062 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 18:19:14,063 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:19:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 18:19:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-28 18:19:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 18:19:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-28 18:19:14,069 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2018-11-28 18:19:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:14,070 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-28 18:19:14,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:19:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-28 18:19:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:19:14,071 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:14,071 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:14,071 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:14,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1185071985, now seen corresponding path program 2 times [2018-11-28 18:19:14,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:14,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:14,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:14,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:14,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:19:14,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:19:14,305 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:19:14,321 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:19:14,367 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 18:19:14,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:19:14,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:19:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:19:14,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:19:14,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-11-28 18:19:14,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:19:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:19:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:19:14,510 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2018-11-28 18:19:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:14,778 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2018-11-28 18:19:14,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:19:14,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-28 18:19:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:14,781 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:19:14,781 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:19:14,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:19:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:19:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-28 18:19:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:19:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-28 18:19:14,802 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2018-11-28 18:19:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:14,802 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-28 18:19:14,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:19:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-28 18:19:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:19:14,803 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:14,805 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:14,806 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:14,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1923748376, now seen corresponding path program 1 times [2018-11-28 18:19:14,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:14,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:14,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:14,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:19:14,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:19:14,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:19:14,935 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:19:14,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:14,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:19:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:19:15,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:19:15,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 18:19:15,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:19:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:19:15,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:19:15,036 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 7 states. [2018-11-28 18:19:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:15,170 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-11-28 18:19:15,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:19:15,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-11-28 18:19:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:15,172 INFO L225 Difference]: With dead ends: 64 [2018-11-28 18:19:15,173 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:19:15,173 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:19:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:19:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-28 18:19:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:19:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-11-28 18:19:15,180 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2018-11-28 18:19:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:15,181 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-11-28 18:19:15,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:19:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-11-28 18:19:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 18:19:15,182 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:15,182 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:15,182 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:15,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:15,183 INFO L82 PathProgramCache]: Analyzing trace with hash -734480054, now seen corresponding path program 2 times [2018-11-28 18:19:15,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:15,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:15,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:15,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:15,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:19:15,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:19:15,366 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:19:15,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:19:15,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:19:15,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:19:15,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:19:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:19:15,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:19:15,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 18:19:15,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:19:15,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:19:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:19:15,468 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 8 states. [2018-11-28 18:19:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:15,655 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-11-28 18:19:15,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:19:15,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-11-28 18:19:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:15,658 INFO L225 Difference]: With dead ends: 75 [2018-11-28 18:19:15,659 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 18:19:15,659 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:19:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 18:19:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-11-28 18:19:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 18:19:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-28 18:19:15,679 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2018-11-28 18:19:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:15,680 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-28 18:19:15,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:19:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-28 18:19:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:19:15,685 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:15,686 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:15,686 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:15,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash -308923348, now seen corresponding path program 3 times [2018-11-28 18:19:15,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:15,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:15,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:15,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:19:15,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:19:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:19:15,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:19:15,968 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:19:15,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 18:19:16,026 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-28 18:19:16,026 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:19:16,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:19:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-11-28 18:19:16,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:19:16,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-11-28 18:19:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:19:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:19:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:19:16,143 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 12 states. [2018-11-28 18:19:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:19:16,563 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2018-11-28 18:19:16,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:19:16,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-11-28 18:19:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:19:16,565 INFO L225 Difference]: With dead ends: 91 [2018-11-28 18:19:16,565 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:19:16,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:19:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:19:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:19:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:19:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:19:16,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 18:19:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:19:16,568 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:19:16,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:19:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:19:16,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:19:16,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:19:16,710 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:19:16,711 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:19:16,711 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:19:16,711 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:19:16,711 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:19:16,711 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:19:16,711 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:19:16,711 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-28 18:19:16,712 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-28 18:19:16,712 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-11-28 18:19:16,712 INFO L444 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-28 18:19:16,712 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-28 18:19:16,712 INFO L444 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-28 18:19:16,713 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-11-28 18:19:16,713 INFO L451 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: true [2018-11-28 18:19:16,713 INFO L448 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2018-11-28 18:19:16,713 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-28 18:19:16,713 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-28 18:19:16,713 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-11-28 18:19:16,713 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:19:16,714 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:19:16,714 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:19:16,714 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:19:16,714 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:19:16,714 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:19:16,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:19:16 BoogieIcfgContainer [2018-11-28 18:19:16,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:19:16,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:19:16,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:19:16,740 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:19:16,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:13" (3/4) ... [2018-11-28 18:19:16,744 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:19:16,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:19:16,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:19:16,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:19:16,755 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 18:19:16,756 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 18:19:16,756 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 18:19:16,804 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:19:16,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:19:16,805 INFO L168 Benchmark]: Toolchain (without parser) took 4647.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.3 MB in the beginning and 914.4 MB in the end (delta: 37.0 MB). Peak memory consumption was 163.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:19:16,806 INFO L168 Benchmark]: CDTParser took 0.22 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 18:19:16,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.59 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:19:16,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.17 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:19:16,808 INFO L168 Benchmark]: Boogie Preprocessor took 33.87 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:19:16,809 INFO L168 Benchmark]: RCFGBuilder took 525.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:19:16,810 INFO L168 Benchmark]: TraceAbstraction took 3629.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.4 MB in the end (delta: 182.4 MB). Peak memory consumption was 182.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:19:16,810 INFO L168 Benchmark]: Witness Printer took 64.31 ms. Allocated memory is still 1.2 GB. Free memory is still 914.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:19:16,815 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 349.59 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 38.17 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.87 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 525.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3629.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.4 MB in the end (delta: 182.4 MB). Peak memory consumption was 182.4 MB. Max. memory is 11.5 GB. * Witness Printer took 64.31 ms. Allocated memory is still 1.2 GB. Free memory is still 914.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * 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: 17]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 130 SDslu, 232 SDs, 0 SdLazy, 218 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, 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, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 46 NumberOfFragments, 12 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 299 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 11683 SizeOfPredicates, 7 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 137/218 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...