./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/loop-lit/cggmp2005_variant.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 fb13e67548d34af589d64a91d36af5946c1dd198 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:06:35,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:35,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:35,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:35,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:35,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:35,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:35,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:35,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:35,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:35,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:35,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:35,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:35,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:35,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:35,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:35,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:35,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:35,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:35,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:35,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:35,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:35,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:35,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:35,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:35,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:35,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:35,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:35,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:35,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:35,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:35,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:35,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:35,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:35,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:35,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:35,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:35,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:35,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:35,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:35,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:35,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:35,233 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:35,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:35,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:35,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:35,235 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:35,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:35,239 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:35,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:35,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:35,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:35,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:35,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:35,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:35,240 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:35,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:35,241 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:35,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:35,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:35,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:35,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:35,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:35,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:35,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:35,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:35,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> fb13e67548d34af589d64a91d36af5946c1dd198 [2019-11-28 17:06:35,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:35,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:35,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:35,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:35,604 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:35,605 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2019-11-28 17:06:35,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63d93326/3842e373ab144b08ae0eb6e1feb48212/FLAG1f2e4b162 [2019-11-28 17:06:36,120 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:36,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2019-11-28 17:06:36,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63d93326/3842e373ab144b08ae0eb6e1feb48212/FLAG1f2e4b162 [2019-11-28 17:06:36,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63d93326/3842e373ab144b08ae0eb6e1feb48212 [2019-11-28 17:06:36,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:36,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:36,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:36,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:36,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:36,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f461f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36, skipping insertion in model container [2019-11-28 17:06:36,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:36,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:36,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:36,776 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:36,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:36,813 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:36,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36 WrapperNode [2019-11-28 17:06:36,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:36,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:36,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:36,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:36,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:36,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:36,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:36,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:36,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (1/1) ... [2019-11-28 17:06:36,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:36,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:36,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:36,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:36,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (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 [2019-11-28 17:06:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:37,123 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:37,123 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:06:37,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37 BoogieIcfgContainer [2019-11-28 17:06:37,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:37,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:37,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:37,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:37,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:36" (1/3) ... [2019-11-28 17:06:37,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36deee0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:37, skipping insertion in model container [2019-11-28 17:06:37,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:36" (2/3) ... [2019-11-28 17:06:37,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36deee0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:37, skipping insertion in model container [2019-11-28 17:06:37,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37" (3/3) ... [2019-11-28 17:06:37,131 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-11-28 17:06:37,139 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:37,146 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:37,156 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:37,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:37,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:37,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:37,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:37,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:37,181 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:37,181 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:37,181 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:06:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:06:37,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:37,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:06:37,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash 922199370, now seen corresponding path program 1 times [2019-11-28 17:06:37,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:37,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435246569] [2019-11-28 17:06:37,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:37,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435246569] [2019-11-28 17:06:37,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:37,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:37,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412568607] [2019-11-28 17:06:37,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:06:37,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:06:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:06:37,332 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:06:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:37,349 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-28 17:06:37,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:06:37,350 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:06:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:37,357 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:06:37,358 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:06:37,360 INFO L630 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 [2019-11-28 17:06:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:06:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:06:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:06:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-28 17:06:37,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2019-11-28 17:06:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:37,386 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-28 17:06:37,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:06:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-28 17:06:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:06:37,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:37,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:06:37,388 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:37,388 INFO L82 PathProgramCache]: Analyzing trace with hash 922080206, now seen corresponding path program 1 times [2019-11-28 17:06:37,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:37,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396750771] [2019-11-28 17:06:37,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:37,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396750771] [2019-11-28 17:06:37,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:37,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:06:37,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658855460] [2019-11-28 17:06:37,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:06:37,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:37,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:06:37,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:37,434 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2019-11-28 17:06:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:37,455 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 17:06:37,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:06:37,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:06:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:37,456 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:06:37,456 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:06:37,457 INFO L630 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 [2019-11-28 17:06:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:06:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:06:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:06:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 17:06:37,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-28 17:06:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:37,462 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 17:06:37,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:06:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-28 17:06:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:06:37,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:37,463 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:37,463 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1478619311, now seen corresponding path program 1 times [2019-11-28 17:06:37,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:37,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879454907] [2019-11-28 17:06:37,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:37,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879454907] [2019-11-28 17:06:37,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868797186] [2019-11-28 17:06:37,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 17:06:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:37,738 WARN L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 17:06:37,743 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:37,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:37,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:37,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-28 17:06:37,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673654790] [2019-11-28 17:06:37,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 17:06:37,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:37,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 17:06:37,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-28 17:06:37,971 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2019-11-28 17:06:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,114 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 17:06:38,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:06:38,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2019-11-28 17:06:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,116 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:06:38,116 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:06:38,117 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:06:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:06:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:06:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:06:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-28 17:06:38,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-28 17:06:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,123 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-28 17:06:38,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 17:06:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-28 17:06:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:06:38,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,124 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:38,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:38,328 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1409106990, now seen corresponding path program 2 times [2019-11-28 17:06:38,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:38,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081258519] [2019-11-28 17:06:38,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:06:38,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081258519] [2019-11-28 17:06:38,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289654787] [2019-11-28 17:06:38,481 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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) [2019-11-28 17:06:38,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:06:38,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:38,523 WARN L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 17:06:38,524 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:38,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:06:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:38,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:38,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2019-11-28 17:06:38,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97311459] [2019-11-28 17:06:38,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 17:06:38,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 17:06:38,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 17:06:38,680 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 12 states. [2019-11-28 17:06:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:39,003 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-28 17:06:39,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 17:06:39,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-11-28 17:06:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:39,004 INFO L225 Difference]: With dead ends: 12 [2019-11-28 17:06:39,004 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:39,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2019-11-28 17:06:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:39,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 17:06:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:39,007 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:39,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 17:06:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:39,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:39,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:39,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:39,282 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,282 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:06:39,283 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,283 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,283 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:06:39,283 INFO L249 CegarLoopResult]: At program point L22(lines 10 23) the Hoare annotation is: true [2019-11-28 17:06:39,283 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-28 17:06:39,284 INFO L242 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= ULTIMATE.start_main_~hi~0 .cse0) (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0))) [2019-11-28 17:06:39,284 INFO L246 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2019-11-28 17:06:39,285 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:06:39,285 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 17:06:39,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:39 BoogieIcfgContainer [2019-11-28 17:06:39,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:39,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:39,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:39,313 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:39,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37" (3/4) ... [2019-11-28 17:06:39,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:39,326 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:06:39,327 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:39,370 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:39,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:39,373 INFO L168 Benchmark]: Toolchain (without parser) took 2821.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 957.7 MB in the beginning and 956.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,374 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:39,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.52 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,375 INFO L168 Benchmark]: Boogie Preprocessor took 17.42 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. [2019-11-28 17:06:39,376 INFO L168 Benchmark]: RCFGBuilder took 211.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,377 INFO L168 Benchmark]: TraceAbstraction took 2186.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 143.9 MB). Peak memory consumption was 143.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,377 INFO L168 Benchmark]: Witness Printer took 58.48 ms. Allocated memory is still 1.2 GB. Free memory is still 956.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:39,381 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.52 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 80.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.42 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. * RCFGBuilder took 211.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2186.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 143.9 MB). Peak memory consumption was 143.9 MB. Max. memory is 11.5 GB. * Witness Printer took 58.48 ms. Allocated memory is still 1.2 GB. Free memory is still 956.5 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (hi <= lo + 2 * mid && lo + 2 * mid <= hi) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 17 SDslu, 23 SDs, 0 SdLazy, 89 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1979 SizeOfPredicates, 10 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...