java -Xmx8000000000 -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 ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:51:42,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:51:42,151 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:51:42,167 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:51:42,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:51:42,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:51:42,171 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:51:42,173 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:51:42,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:51:42,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:51:42,181 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:51:42,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:51:42,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:51:42,186 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:51:42,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:51:42,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:51:42,189 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:51:42,191 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:51:42,195 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:51:42,197 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:51:42,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:51:42,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:51:42,206 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:51:42,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:51:42,206 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:51:42,207 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:51:42,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:51:42,208 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:51:42,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:51:42,212 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:51:42,212 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:51:42,213 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 22:51:42,217 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:51:42,238 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:51:42,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:51:42,239 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:51:42,239 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:51:42,240 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:51:42,240 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:51:42,240 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:51:42,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:51:42,241 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:51:42,241 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:51:42,241 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:51:42,241 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:51:42,241 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:51:42,242 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:51:42,242 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:51:42,242 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:51:42,242 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:51:42,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:51:42,243 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:51:42,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:51:42,243 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:51:42,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:51:42,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:51:42,243 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:51:42,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:51:42,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:51:42,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:51:42,244 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:51:42,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:51:42,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:51:42,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:51:42,339 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:51:42,339 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:51:42,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c [2018-11-06 22:51:42,399 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ba63176/74ec82c93bba4f07910df88c5bc5cd36/FLAGa955a52d8 [2018-11-06 22:51:42,859 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:51:42,860 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c [2018-11-06 22:51:42,867 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ba63176/74ec82c93bba4f07910df88c5bc5cd36/FLAGa955a52d8 [2018-11-06 22:51:42,882 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81ba63176/74ec82c93bba4f07910df88c5bc5cd36 [2018-11-06 22:51:42,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:51:42,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:51:42,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:42,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:51:42,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:51:42,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:42" (1/1) ... [2018-11-06 22:51:42,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fdcbab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:42, skipping insertion in model container [2018-11-06 22:51:42,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:42" (1/1) ... [2018-11-06 22:51:42,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:51:42,938 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:51:43,187 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:43,194 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:51:43,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:43,239 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:51:43,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43 WrapperNode [2018-11-06 22:51:43,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:43,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:43,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:51:43,241 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:51:43,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:43,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:51:43,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:51:43,273 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:51:43,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (1/1) ... [2018-11-06 22:51:43,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:51:43,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:51:43,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:51:43,291 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:51:43,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (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 [2018-11-06 22:51:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:51:43,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:51:43,692 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:51:43,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:43 BoogieIcfgContainer [2018-11-06 22:51:43,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:51:43,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:51:43,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:51:43,697 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:51:43,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:42" (1/3) ... [2018-11-06 22:51:43,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca134c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:43, skipping insertion in model container [2018-11-06 22:51:43,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43" (2/3) ... [2018-11-06 22:51:43,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca134c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:43, skipping insertion in model container [2018-11-06 22:51:43,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:43" (3/3) ... [2018-11-06 22:51:43,700 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build_true-unreach-call.i.v+lhb-reducer.c [2018-11-06 22:51:43,711 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:51:43,731 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-06 22:51:43,779 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-06 22:51:43,822 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:51:43,823 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:51:43,823 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:51:43,823 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:51:43,824 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:51:43,824 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:51:43,824 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:51:43,824 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:51:43,824 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:51:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-06 22:51:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:51:43,847 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:43,848 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:51:43,850 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:43,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2018-11-06 22:51:43,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:43,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:43,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:43,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:43,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:44,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:44,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:51:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:51:44,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:51:44,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:51:44,049 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-11-06 22:51:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:44,148 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-11-06 22:51:44,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:51:44,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-11-06 22:51:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:44,160 INFO L225 Difference]: With dead ends: 25 [2018-11-06 22:51:44,161 INFO L226 Difference]: Without dead ends: 14 [2018-11-06 22:51:44,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:51:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-06 22:51:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-06 22:51:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-06 22:51:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-06 22:51:44,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2018-11-06 22:51:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:44,202 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-06 22:51:44,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:51:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-06 22:51:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 22:51:44,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:44,203 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:44,203 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:44,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2018-11-06 22:51:44,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:44,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:44,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:44,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:44,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:44,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:44,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:51:44,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:51:44,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:51:44,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:51:44,526 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-11-06 22:51:44,826 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-06 22:51:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:44,967 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-11-06 22:51:44,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:51:44,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-11-06 22:51:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:44,969 INFO L225 Difference]: With dead ends: 15 [2018-11-06 22:51:44,969 INFO L226 Difference]: Without dead ends: 13 [2018-11-06 22:51:44,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:51:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-06 22:51:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-06 22:51:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:51:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-11-06 22:51:44,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2018-11-06 22:51:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:44,975 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-11-06 22:51:44,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:51:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-11-06 22:51:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-06 22:51:44,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:44,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:44,977 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:44,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2018-11-06 22:51:44,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:44,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:44,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:44,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:44,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:45,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:45,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:51:45,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:51:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:51:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:51:45,123 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-11-06 22:51:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:45,399 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-11-06 22:51:45,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:51:45,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-06 22:51:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:45,400 INFO L225 Difference]: With dead ends: 21 [2018-11-06 22:51:45,401 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:51:45,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:51:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:51:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:51:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:51:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:51:45,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-11-06 22:51:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:45,404 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:51:45,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:51:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:51:45,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:51:45,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:51:45,567 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:51:45,568 INFO L421 ceAbstractionStarter]: At program point L64(lines 34 84) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__i~0) (= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2018-11-06 22:51:45,568 INFO L428 ceAbstractionStarter]: At program point L95(lines 8 97) the Hoare annotation is: true [2018-11-06 22:51:45,568 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 91) no Hoare annotation was computed. [2018-11-06 22:51:45,569 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-11-06 22:51:45,569 INFO L425 ceAbstractionStarter]: For program point L71(lines 71 80) no Hoare annotation was computed. [2018-11-06 22:51:45,569 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-11-06 22:51:45,569 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:51:45,569 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-06 22:51:45,570 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:51:45,570 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:51:45,570 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 84) no Hoare annotation was computed. [2018-11-06 22:51:45,570 INFO L425 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-11-06 22:51:45,570 INFO L421 ceAbstractionStarter]: At program point L90(lines 9 97) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~main__i~0) [2018-11-06 22:51:45,570 INFO L425 ceAbstractionStarter]: For program point L57(lines 57 65) no Hoare annotation was computed. [2018-11-06 22:51:45,571 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-06 22:51:45,571 INFO L421 ceAbstractionStarter]: At program point L74(lines 47 82) the Hoare annotation is: (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 1) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2018-11-06 22:51:45,571 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 82) no Hoare annotation was computed. [2018-11-06 22:51:45,571 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2018-11-06 22:51:45,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:51:45 BoogieIcfgContainer [2018-11-06 22:51:45,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:51:45,586 INFO L168 Benchmark]: Toolchain (without parser) took 2692.56 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -716.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:45,587 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:51:45,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.55 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:45,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:51:45,589 INFO L168 Benchmark]: Boogie Preprocessor took 17.36 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:51:45,590 INFO L168 Benchmark]: RCFGBuilder took 402.15 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:45,591 INFO L168 Benchmark]: TraceAbstraction took 1891.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:45,596 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.55 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.36 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 402.15 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1891.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((__VERIFIER_assert__cond == 1 && !(__VERIFIER_assert__cond == 0)) && 0 <= main__i) && main__i < main__nlen - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (0 <= main__i && 1 == __VERIFIER_assert__cond) && main__i < main__nlen - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. SAFE Result, 1.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 64 SDslu, 20 SDs, 0 SdLazy, 65 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 28 HoareAnnotationTreeSize, 4 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...