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-c6af20d [2019-09-03 19:50:30,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:50:30,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:50:30,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 19:50:30,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:50:30,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:50:30,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:50:30,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:50:30,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:50:30,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:50:30,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:50:30,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:50:30,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:50:30,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:50:30,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:50:30,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:50:30,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:50:30,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:50:30,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:50:30,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:50:30,124 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 [2019-09-03 19:50:30,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:50:30,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:50:30,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:50:30,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:50:30,140 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:50:30,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:50:30,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:50:30,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:50:30,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:50:30,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:50:30,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:50:30,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:50:30,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:50:30,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:50:30,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:50:30,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:50:30,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:50:30,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:50:30,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:50:30,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:50:30,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:50:30,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:50:30,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:50:30,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:50:30,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:50:30,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:50:30,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:50:30,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:50:30,188 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:50:30,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-03 19:50:30,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66634b82a/5dfb8a1e7c06434f90cf36e025ed77ff/FLAGbf79a59df [2019-09-03 19:50:30,642 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:50:30,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-03 19:50:30,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66634b82a/5dfb8a1e7c06434f90cf36e025ed77ff/FLAGbf79a59df [2019-09-03 19:50:31,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66634b82a/5dfb8a1e7c06434f90cf36e025ed77ff [2019-09-03 19:50:31,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:50:31,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:50:31,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:31,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:50:31,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:50:31,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624e1390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31, skipping insertion in model container [2019-09-03 19:50:31,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,086 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:50:31,107 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:50:31,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:31,387 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:50:31,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:31,433 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:50:31,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31 WrapperNode [2019-09-03 19:50:31,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:31,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:50:31,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:50:31,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:50:31,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (1/1) ... [2019-09-03 19:50:31,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:50:31,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:50:31,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:50:31,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:50:31,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (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 [2019-09-03 19:50:31,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:50:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:50:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:50:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:50:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:50:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:50:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:50:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:50:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:50:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:50:31,883 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:50:31,884 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-03 19:50:31,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:31 BoogieIcfgContainer [2019-09-03 19:50:31,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:50:31,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:50:31,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:50:31,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:50:31,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:50:31" (1/3) ... [2019-09-03 19:50:31,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f0115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:31, skipping insertion in model container [2019-09-03 19:50:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:31" (2/3) ... [2019-09-03 19:50:31,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f0115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:31, skipping insertion in model container [2019-09-03 19:50:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:31" (3/3) ... [2019-09-03 19:50:31,892 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2019-09-03 19:50:31,901 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:50:31,908 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-03 19:50:31,928 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-03 19:50:31,963 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:50:31,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:50:31,964 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:50:31,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:50:31,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:50:31,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:50:31,965 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:50:31,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:50:31,966 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:50:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-03 19:50:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 19:50:32,000 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:32,005 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:32,007 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:32,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1077508024, now seen corresponding path program 1 times [2019-09-03 19:50:32,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:32,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:32,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:32,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:32,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:32,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 19:50:32,204 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 19:50:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 19:50:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 19:50:32,221 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-09-03 19:50:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:32,295 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-09-03 19:50:32,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:50:32,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-09-03 19:50:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:32,305 INFO L225 Difference]: With dead ends: 30 [2019-09-03 19:50:32,305 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 19:50:32,308 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 [2019-09-03 19:50:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 19:50:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-03 19:50:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 19:50:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-03 19:50:32,343 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-09-03 19:50:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:32,344 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-03 19:50:32,344 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 19:50:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-03 19:50:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 19:50:32,345 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:32,345 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:32,346 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 398186682, now seen corresponding path program 1 times [2019-09-03 19:50:32,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:32,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:32,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:32,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:32,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:32,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 19:50:32,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 19:50:32,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 19:50:32,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 19:50:32,409 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-09-03 19:50:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:32,449 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-09-03 19:50:32,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 19:50:32,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-03 19:50:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:32,451 INFO L225 Difference]: With dead ends: 19 [2019-09-03 19:50:32,452 INFO L226 Difference]: Without dead ends: 17 [2019-09-03 19:50:32,453 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 [2019-09-03 19:50:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-03 19:50:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-09-03 19:50:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 19:50:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-03 19:50:32,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2019-09-03 19:50:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:32,458 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-03 19:50:32,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 19:50:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-03 19:50:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:50:32,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:32,460 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:32,460 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash 405408254, now seen corresponding path program 1 times [2019-09-03 19:50:32,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:32,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:32,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:32,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:32,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:32,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:50:32,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:50:32,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:50:32,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:50:32,538 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-03 19:50:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:32,693 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-09-03 19:50:32,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 19:50:32,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-03 19:50:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:32,695 INFO L225 Difference]: With dead ends: 25 [2019-09-03 19:50:32,695 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:50:32,696 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 [2019-09-03 19:50:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:50:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:50:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:50:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:50:32,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-03 19:50:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:32,697 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:50:32,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:50:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:50:32,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:50:32,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:50:32,830 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:50:32,830 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:50:32,830 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:32,830 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:32,831 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:50:32,831 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:50:32,831 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:50:32,831 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))))) [2019-09-03 19:50:32,832 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-09-03 19:50:32,832 INFO L443 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-09-03 19:50:32,832 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 97) no Hoare annotation was computed. [2019-09-03 19:50:32,832 INFO L443 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-09-03 19:50:32,832 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 91) no Hoare annotation was computed. [2019-09-03 19:50:32,833 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 97) no Hoare annotation was computed. [2019-09-03 19:50:32,833 INFO L443 ceAbstractionStarter]: For program point L71(lines 71 80) no Hoare annotation was computed. [2019-09-03 19:50:32,833 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-09-03 19:50:32,833 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 97) the Hoare annotation is: true [2019-09-03 19:50:32,833 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 84) no Hoare annotation was computed. [2019-09-03 19:50:32,833 INFO L443 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2019-09-03 19:50:32,834 INFO L439 ceAbstractionStarter]: At program point L90(lines 9 97) the Hoare annotation is: (<= 0 main_~main__i~0) [2019-09-03 19:50:32,834 INFO L443 ceAbstractionStarter]: For program point L57(lines 57 65) no Hoare annotation was computed. [2019-09-03 19:50:32,834 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-09-03 19:50:32,834 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))) [2019-09-03 19:50:32,834 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 82) no Hoare annotation was computed. [2019-09-03 19:50:32,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:50:32 BoogieIcfgContainer [2019-09-03 19:50:32,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:50:32,859 INFO L168 Benchmark]: Toolchain (without parser) took 1789.31 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 88.6 MB in the beginning and 104.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,860 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.44 ms. Allocated memory is still 132.6 MB. Free memory was 88.4 MB in the beginning and 78.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,864 INFO L168 Benchmark]: Boogie Preprocessor took 182.37 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 78.3 MB in the beginning and 179.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,865 INFO L168 Benchmark]: RCFGBuilder took 266.24 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 166.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,866 INFO L168 Benchmark]: TraceAbstraction took 969.15 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 104.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:32,876 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.44 ms. Allocated memory is still 132.6 MB. Free memory was 88.4 MB in the beginning and 78.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.37 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 78.3 MB in the beginning and 179.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.24 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 166.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 969.15 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 104.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 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, 0.8s 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...