./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.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/bitvector/sum02_false-unreach-call_true-no-overflow.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 f2964994cdaa1e60b18f6e8e9960cc97625ea606 .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 16:06:06,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 16:06:06,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 16:06:06,122 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 16:06:06,122 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 16:06:06,123 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 16:06:06,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 16:06:06,127 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 16:06:06,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 16:06:06,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 16:06:06,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 16:06:06,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 16:06:06,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 16:06:06,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 16:06:06,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 16:06:06,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 16:06:06,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 16:06:06,139 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 16:06:06,142 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 16:06:06,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 16:06:06,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 16:06:06,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 16:06:06,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 16:06:06,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 16:06:06,151 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 16:06:06,152 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 16:06:06,153 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 16:06:06,154 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 16:06:06,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 16:06:06,157 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 16:06:06,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 16:06:06,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 16:06:06,159 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 16:06:06,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 16:06:06,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 16:06:06,162 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 16:06:06,162 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 16:06:06,178 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 16:06:06,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 16:06:06,179 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 16:06:06,179 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 16:06:06,180 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 16:06:06,181 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 16:06:06,181 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 16:06:06,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 16:06:06,181 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 16:06:06,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 16:06:06,182 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 16:06:06,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 16:06:06,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 16:06:06,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 16:06:06,184 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 16:06:06,184 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 16:06:06,184 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 16:06:06,184 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 16:06:06,184 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 16:06:06,185 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 16:06:06,185 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 16:06:06,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 16:06:06,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 16:06:06,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 16:06:06,186 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 16:06:06,186 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 16:06:06,186 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 16:06:06,187 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 16:06:06,188 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 16:06:06,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 16:06:06,188 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 -> f2964994cdaa1e60b18f6e8e9960cc97625ea606 [2018-11-28 16:06:06,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 16:06:06,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 16:06:06,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 16:06:06,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 16:06:06,249 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 16:06:06,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-11-28 16:06:06,324 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f71f2b61/b40de232a6674d3da54e4f3256512a0e/FLAGaf04cc4cd [2018-11-28 16:06:06,795 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 16:06:06,796 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-11-28 16:06:06,801 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f71f2b61/b40de232a6674d3da54e4f3256512a0e/FLAGaf04cc4cd [2018-11-28 16:06:07,146 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f71f2b61/b40de232a6674d3da54e4f3256512a0e [2018-11-28 16:06:07,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 16:06:07,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 16:06:07,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 16:06:07,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 16:06:07,160 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 16:06:07,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1b49a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07, skipping insertion in model container [2018-11-28 16:06:07,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 16:06:07,193 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 16:06:07,425 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 16:06:07,434 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 16:06:07,457 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 16:06:07,475 INFO L195 MainTranslator]: Completed translation [2018-11-28 16:06:07,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07 WrapperNode [2018-11-28 16:06:07,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 16:06:07,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 16:06:07,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 16:06:07,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 16:06:07,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 16:06:07,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 16:06:07,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 16:06:07,504 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 16:06:07,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (1/1) ... [2018-11-28 16:06:07,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 16:06:07,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 16:06:07,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 16:06:07,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 16:06:07,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (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 16:06:07,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 16:06:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 16:06:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 16:06:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 16:06:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 16:06:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 16:06:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 16:06:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 16:06:07,923 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 16:06:07,923 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 16:06:07,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:07 BoogieIcfgContainer [2018-11-28 16:06:07,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 16:06:07,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 16:06:07,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 16:06:07,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 16:06:07,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:06:07" (1/3) ... [2018-11-28 16:06:07,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:07, skipping insertion in model container [2018-11-28 16:06:07,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:07" (2/3) ... [2018-11-28 16:06:07,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:07, skipping insertion in model container [2018-11-28 16:06:07,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:07" (3/3) ... [2018-11-28 16:06:07,931 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02_false-unreach-call_true-no-overflow.i [2018-11-28 16:06:07,940 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 16:06:07,948 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 16:06:07,965 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 16:06:07,999 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 16:06:08,000 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 16:06:08,000 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 16:06:08,000 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 16:06:08,000 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 16:06:08,000 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 16:06:08,000 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 16:06:08,001 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 16:06:08,001 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 16:06:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-28 16:06:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 16:06:08,029 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:06:08,032 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:06:08,036 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:06:08,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:06:08,042 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-28 16:06:08,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:06:08,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:06:08,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:06:08,158 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 16:06:08,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:06:08,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 16:06:08,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 16:06:08,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 16:06:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 16:06:08,185 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-28 16:06:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:06:08,208 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-28 16:06:08,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 16:06:08,210 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 16:06:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:06:08,220 INFO L225 Difference]: With dead ends: 29 [2018-11-28 16:06:08,220 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 16:06:08,224 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 16:06:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 16:06:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 16:06:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 16:06:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 16:06:08,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-28 16:06:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:06:08,267 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 16:06:08,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 16:06:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 16:06:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 16:06:08,268 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:06:08,268 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:06:08,268 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:06:08,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:06:08,269 INFO L82 PathProgramCache]: Analyzing trace with hash -15914692, now seen corresponding path program 1 times [2018-11-28 16:06:08,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:06:08,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:06:08,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,285 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 16:06:08,285 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 16:06:08,286 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 16:06:08,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:06:08,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 16:06:08,456 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 16:06:08,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:06:08,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:06:08,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:06:08,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:06:08,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:06:08,479 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-28 16:06:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:06:08,538 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 16:06:08,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:06:08,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 16:06:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:06:08,541 INFO L225 Difference]: With dead ends: 19 [2018-11-28 16:06:08,541 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 16:06:08,544 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 16:06:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 16:06:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-28 16:06:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 16:06:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 16:06:08,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-28 16:06:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:06:08,553 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 16:06:08,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:06:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 16:06:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 16:06:08,554 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:06:08,555 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:06:08,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:06:08,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:06:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1244203718, now seen corresponding path program 1 times [2018-11-28 16:06:08,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:06:08,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:06:08,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,577 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 16:06:08,577 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 16:06:08,577 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 16:06:08,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:06:08,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 16:06:08,699 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 16:06:08,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 16:06:08,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-28 16:06:08,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 16:06:08,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 16:06:08,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 16:06:08,723 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-11-28 16:06:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:06:08,858 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-28 16:06:08,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 16:06:08,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-28 16:06:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:06:08,859 INFO L225 Difference]: With dead ends: 20 [2018-11-28 16:06:08,863 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 16:06:08,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 16:06:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 16:06:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 16:06:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 16:06:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-28 16:06:08,872 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-28 16:06:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:06:08,873 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-28 16:06:08,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 16:06:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-28 16:06:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 16:06:08,874 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:06:08,875 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:06:08,875 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:06:08,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:06:08,876 INFO L82 PathProgramCache]: Analyzing trace with hash -513951304, now seen corresponding path program 2 times [2018-11-28 16:06:08,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:06:08,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:06:08,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:06:08,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:06:08,899 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 16:06:08,900 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 16:06:08,900 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 16:06:08,914 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 16:06:21,064 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 16:06:21,065 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-28 16:06:21,085 INFO L285 seRefinementStrategy]: Strategy CamelRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-11-28 16:06:21,085 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 16:06:21,102 WARN L228 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-11-28 16:06:21,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:06:21 BoogieIcfgContainer [2018-11-28 16:06:21,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 16:06:21,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 16:06:21,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 16:06:21,104 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 16:06:21,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:07" (3/4) ... [2018-11-28 16:06:21,108 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 16:06:21,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 16:06:21,109 INFO L168 Benchmark]: Toolchain (without parser) took 13957.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -113.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2018-11-28 16:06:21,110 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:06:21,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.52 ms. Allocated memory is still 1.0 GB. Free memory was 945.9 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 16:06:21,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:06:21,112 INFO L168 Benchmark]: Boogie Preprocessor took 39.17 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:06:21,113 INFO L168 Benchmark]: RCFGBuilder took 380.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 16:06:21,114 INFO L168 Benchmark]: TraceAbstraction took 13178.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. [2018-11-28 16:06:21,115 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:06:21,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.52 ms. Allocated memory is still 1.0 GB. Free memory was 945.9 MB in the beginning and 935.2 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 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.17 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 380.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13178.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND FALSE !(i<=n) [L15] CALL __VERIFIER_assert(sn==(n*(n+1))/2 || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNKNOWN Result, 13.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 2 SDslu, 40 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 12.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 477 SizeOfPredicates, 6 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...