java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 11:59:45,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 11:59:45,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 11:59:45,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 11:59:45,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 11:59:45,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 11:59:45,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 11:59:45,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 11:59:45,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 11:59:45,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 11:59:45,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 11:59:45,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 11:59:45,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 11:59:45,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 11:59:45,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 11:59:45,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 11:59:45,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 11:59:45,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 11:59:45,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 11:59:45,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 11:59:45,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-05 11:59:45,316 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 11:59:45,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 11:59:45,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 11:59:45,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 11:59:45,318 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 11:59:45,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 11:59:45,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 11:59:45,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 11:59:45,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 11:59:45,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 11:59:45,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 11:59:45,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 11:59:45,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 11:59:45,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 11:59:45,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 11:59:45,320 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 11:59:45,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 11:59:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 11:59:45,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 11:59:45,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 11:59:45,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 11:59:45,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:59:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 11:59:45,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 11:59:45,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 11:59:45,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 11:59:45,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 11:59:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 11:59:45,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 11:59:45,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 11:59:45,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 11:59:45,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 11:59:45,384 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 11:59:45,385 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 11:59:45,385 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-05 11:59:45,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc5df31f/73ea6951267f482e8dc491ffd164e0f3/FLAGb6c424b08 [2019-09-05 11:59:45,886 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 11:59:45,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-05 11:59:45,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc5df31f/73ea6951267f482e8dc491ffd164e0f3/FLAGb6c424b08 [2019-09-05 11:59:46,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc5df31f/73ea6951267f482e8dc491ffd164e0f3 [2019-09-05 11:59:46,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 11:59:46,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 11:59:46,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 11:59:46,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 11:59:46,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 11:59:46,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb091df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46, skipping insertion in model container [2019-09-05 11:59:46,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,298 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 11:59:46,318 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 11:59:46,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:59:46,517 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 11:59:46,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:59:46,638 INFO L192 MainTranslator]: Completed translation [2019-09-05 11:59:46,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46 WrapperNode [2019-09-05 11:59:46,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 11:59:46,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 11:59:46,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 11:59:46,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 11:59:46,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (1/1) ... [2019-09-05 11:59:46,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 11:59:46,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 11:59:46,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 11:59:46,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 11:59:46,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (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 [2019-09-05 11:59:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 11:59:46,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 11:59:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 11:59:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 11:59:46,929 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 11:59:46,929 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-05 11:59:46,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:59:46 BoogieIcfgContainer [2019-09-05 11:59:46,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 11:59:46,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 11:59:46,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 11:59:46,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 11:59:46,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 11:59:46" (1/3) ... [2019-09-05 11:59:46,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162d4c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:59:46, skipping insertion in model container [2019-09-05 11:59:46,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:59:46" (2/3) ... [2019-09-05 11:59:46,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162d4c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:59:46, skipping insertion in model container [2019-09-05 11:59:46,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:59:46" (3/3) ... [2019-09-05 11:59:46,953 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2019-09-05 11:59:46,986 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 11:59:47,003 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-05 11:59:47,025 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-05 11:59:47,056 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 11:59:47,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 11:59:47,057 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 11:59:47,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 11:59:47,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 11:59:47,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 11:59:47,057 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 11:59:47,057 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 11:59:47,057 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 11:59:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-05 11:59:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 11:59:47,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:59:47,083 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:59:47,085 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:59:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:59:47,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1077508024, now seen corresponding path program 1 times [2019-09-05 11:59:47,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:59:47,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:59:47,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:59:47,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:59:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:59:47,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:59:47,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 11:59:47,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 11:59:47,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 11:59:47,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:59:47,263 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-09-05 11:59:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:59:47,345 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-09-05 11:59:47,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 11:59:47,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-09-05 11:59:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:59:47,356 INFO L225 Difference]: With dead ends: 30 [2019-09-05 11:59:47,356 INFO L226 Difference]: Without dead ends: 18 [2019-09-05 11:59:47,360 INFO L628 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 [2019-09-05 11:59:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-05 11:59:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-05 11:59:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-05 11:59:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-05 11:59:47,399 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-09-05 11:59:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:59:47,400 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-05 11:59:47,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 11:59:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-05 11:59:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-05 11:59:47,401 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:59:47,401 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:59:47,402 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:59:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:59:47,402 INFO L82 PathProgramCache]: Analyzing trace with hash 398186682, now seen corresponding path program 1 times [2019-09-05 11:59:47,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:59:47,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:59:47,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:59:47,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:59:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:59:47,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:59:47,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 11:59:47,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 11:59:47,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 11:59:47,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:59:47,455 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-09-05 11:59:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:59:47,510 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-09-05 11:59:47,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:59:47,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-05 11:59:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:59:47,514 INFO L225 Difference]: With dead ends: 19 [2019-09-05 11:59:47,515 INFO L226 Difference]: Without dead ends: 17 [2019-09-05 11:59:47,516 INFO L628 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 [2019-09-05 11:59:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-05 11:59:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-09-05 11:59:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-05 11:59:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-05 11:59:47,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2019-09-05 11:59:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:59:47,528 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-05 11:59:47,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 11:59:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-05 11:59:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-05 11:59:47,531 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:59:47,531 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:59:47,531 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:59:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:59:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash 405408254, now seen corresponding path program 1 times [2019-09-05 11:59:47,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:59:47,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:59:47,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:59:47,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:59:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:59:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:59:47,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:59:47,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 11:59:47,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 11:59:47,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 11:59:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:59:47,667 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-05 11:59:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:59:47,811 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-09-05 11:59:47,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-05 11:59:47,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-05 11:59:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:59:47,813 INFO L225 Difference]: With dead ends: 25 [2019-09-05 11:59:47,813 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 11:59:47,814 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-05 11:59:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 11:59:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 11:59:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 11:59:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 11:59:47,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-05 11:59:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:59:47,815 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 11:59:47,815 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 11:59:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 11:59:47,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 11:59:47,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 11:59:47,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-05 11:59:47,950 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-05 11:59:47,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 11:59:47,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 11:59:47,951 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 11:59:47,951 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 11:59:47,951 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 11:59:47,951 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-09-05 11:59:47,952 INFO L439 ceAbstractionStarter]: At program point L64(lines 34 84) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__i~0)) (.cse1 (<= (+ main_~main__i~0 1) main_~main__nlen~0))) (or (and .cse0 (= main_~__VERIFIER_assert__cond~0 1) .cse1) (and .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0))))) [2019-09-05 11:59:47,952 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 97) no Hoare annotation was computed. [2019-09-05 11:59:47,952 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 91) no Hoare annotation was computed. [2019-09-05 11:59:47,952 INFO L443 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-09-05 11:59:47,952 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 97) no Hoare annotation was computed. [2019-09-05 11:59:47,953 INFO L443 ceAbstractionStarter]: For program point L71(lines 71 80) no Hoare annotation was computed. [2019-09-05 11:59:47,953 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-09-05 11:59:47,953 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 97) the Hoare annotation is: true [2019-09-05 11:59:47,953 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 84) no Hoare annotation was computed. [2019-09-05 11:59:47,953 INFO L443 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2019-09-05 11:59:47,954 INFO L439 ceAbstractionStarter]: At program point L90(lines 9 97) the Hoare annotation is: (<= 0 main_~main__i~0) [2019-09-05 11:59:47,954 INFO L443 ceAbstractionStarter]: For program point L57(lines 57 65) no Hoare annotation was computed. [2019-09-05 11:59:47,954 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-09-05 11:59:47,954 INFO L439 ceAbstractionStarter]: At program point L74(lines 47 82) the Hoare annotation is: (and (<= 0 main_~main__i~0) (not (= main_~__VERIFIER_assert__cond~1 0)) (<= (+ main_~main__i~0 1) main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2019-09-05 11:59:47,954 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 82) no Hoare annotation was computed. [2019-09-05 11:59:47,955 INFO L443 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-09-05 11:59:47,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 11:59:47 BoogieIcfgContainer [2019-09-05 11:59:47,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 11:59:47,974 INFO L168 Benchmark]: Toolchain (without parser) took 1690.00 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 85.8 MB in the beginning and 100.1 MB in the end (delta: -14.3 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,975 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.41 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 85.6 MB in the beginning and 177.2 MB in the end (delta: -91.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,977 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 ms. Allocated memory is still 198.7 MB. Free memory was 177.2 MB in the beginning and 175.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,978 INFO L168 Benchmark]: RCFGBuilder took 263.80 ms. Allocated memory is still 198.7 MB. Free memory was 174.9 MB in the beginning and 161.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,979 INFO L168 Benchmark]: TraceAbstraction took 1039.35 ms. Allocated memory is still 198.7 MB. Free memory was 161.7 MB in the beginning and 100.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2019-09-05 11:59:47,983 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.41 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 85.6 MB in the beginning and 177.2 MB in the end (delta: -91.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.23 ms. Allocated memory is still 198.7 MB. Free memory was 177.2 MB in the beginning and 175.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.80 ms. Allocated memory is still 198.7 MB. Free memory was 174.9 MB in the beginning and 161.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1039.35 ms. Allocated memory is still 198.7 MB. Free memory was 161.7 MB in the beginning and 100.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 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: 43]: 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((0 <= main__i && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((0 <= main__i && __VERIFIER_assert__cond == 1) && main__i + 1 <= main__nlen) || (((0 <= main__i && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && !(__VERIFIER_assert__cond == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 3 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 52 SDslu, 54 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 54 HoareAnnotationTreeSize, 7 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 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...