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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:33:19,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:33:19,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:33:19,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 11:33:19,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:33:19,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:33:19,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:33:19,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:33:19,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:33:19,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:33:19,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:33:19,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:33:19,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:33:19,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:33:19,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:33:19,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:33:19,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:33:19,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:33:19,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:33:19,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:33:19,178 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 [2019-10-02 11:33:19,198 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:33:19,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:33:19,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:33:19,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:33:19,201 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:33:19,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:33:19,201 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:33:19,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:33:19,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:33:19,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:33:19,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:33:19,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:33:19,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:33:19,204 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:33:19,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:33:19,204 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:33:19,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:33:19,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:33:19,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:33:19,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:33:19,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:33:19,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:33:19,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:33:19,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:33:19,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:33:19,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:33:19,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:33:19,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:33:19,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:33:19,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:33:19,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:33:19,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:33:19,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:33:19,283 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:33:19,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-02 11:33:19,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e551eb57/990cd43871ac46aa894bb1fc31512b3e/FLAG0d3783318 [2019-10-02 11:33:19,785 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:33:19,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-02 11:33:19,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e551eb57/990cd43871ac46aa894bb1fc31512b3e/FLAG0d3783318 [2019-10-02 11:33:20,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e551eb57/990cd43871ac46aa894bb1fc31512b3e [2019-10-02 11:33:20,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:33:20,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:33:20,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:33:20,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:33:20,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:33:20,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1d5d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20, skipping insertion in model container [2019-10-02 11:33:20,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,195 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:33:20,214 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:33:20,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:33:20,367 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:33:20,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:33:20,398 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:33:20,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20 WrapperNode [2019-10-02 11:33:20,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:33:20,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:33:20,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:33:20,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:33:20,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (1/1) ... [2019-10-02 11:33:20,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:33:20,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:33:20,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:33:20,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:33:20,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (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 [2019-10-02 11:33:20,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:33:20,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:33:20,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:33:20,567 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-02 11:33:20,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:33:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:33:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:33:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-02 11:33:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:33:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:33:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:33:20,715 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:33:20,715 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 11:33:20,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:33:20 BoogieIcfgContainer [2019-10-02 11:33:20,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:33:20,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:33:20,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:33:20,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:33:20,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:33:20" (1/3) ... [2019-10-02 11:33:20,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df19976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:33:20, skipping insertion in model container [2019-10-02 11:33:20,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:33:20" (2/3) ... [2019-10-02 11:33:20,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df19976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:33:20, skipping insertion in model container [2019-10-02 11:33:20,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:33:20" (3/3) ... [2019-10-02 11:33:20,727 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2019-10-02 11:33:20,741 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:33:20,751 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:33:20,809 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:33:20,862 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:33:20,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:33:20,862 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:33:20,863 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:33:20,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:33:20,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:33:20,863 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:33:20,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:33:20,864 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:33:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-02 11:33:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:33:20,885 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:33:20,886 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:33:20,887 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:33:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:33:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2019-10-02 11:33:20,894 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:33:20,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:33:20,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:33:20,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:33:20,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:33:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:33:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:33:21,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:33:21,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:33:21,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:33:21,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:33:21,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:33:21,022 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-02 11:33:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:33:21,045 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2019-10-02 11:33:21,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:33:21,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 11:33:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:33:21,055 INFO L225 Difference]: With dead ends: 35 [2019-10-02 11:33:21,055 INFO L226 Difference]: Without dead ends: 17 [2019-10-02 11:33:21,058 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:33:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-02 11:33:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-02 11:33:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-02 11:33:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-02 11:33:21,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-10-02 11:33:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:33:21,097 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-02 11:33:21,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:33:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-02 11:33:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:33:21,099 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:33:21,100 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:33:21,100 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:33:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:33:21,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2019-10-02 11:33:21,102 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:33:21,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:33:21,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:33:21,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:33:21,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:33:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:33:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:33:21,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:33:21,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 11:33:21,203 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:33:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:33:21,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:33:21,204 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-10-02 11:33:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:33:21,275 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-02 11:33:21,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:33:21,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-02 11:33:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:33:21,276 INFO L225 Difference]: With dead ends: 17 [2019-10-02 11:33:21,276 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:33:21,278 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:33:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:33:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:33:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:33:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:33:21,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-02 11:33:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:33:21,280 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:33:21,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:33:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:33:21,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:33:21,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:33:21,349 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:33:21,350 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:33:21,350 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:33:21,350 INFO L439 ceAbstractionStarter]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-02 11:33:21,350 INFO L443 ceAbstractionStarter]: For program point L14-1(lines 12 19) no Hoare annotation was computed. [2019-10-02 11:33:21,351 INFO L443 ceAbstractionStarter]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2019-10-02 11:33:21,351 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:33:21,351 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2019-10-02 11:33:21,351 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:33:21,352 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:33:21,352 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-10-02 11:33:21,352 INFO L439 ceAbstractionStarter]: At program point L27(lines 22 33) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-02 11:33:21,352 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-02 11:33:21,353 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-02 11:33:21,354 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2019-10-02 11:33:21,355 INFO L439 ceAbstractionStarter]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2019-10-02 11:33:21,355 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2019-10-02 11:33:21,355 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:33:21,355 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:33:21,356 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:33:21,356 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:33:21,357 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:33:21,357 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:33:21,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:33:21 BoogieIcfgContainer [2019-10-02 11:33:21,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:33:21,365 INFO L168 Benchmark]: Toolchain (without parser) took 1188.11 ms. Allocated memory was 133.7 MB in the beginning and 198.7 MB in the end (delta: 65.0 MB). Free memory was 88.3 MB in the beginning and 130.4 MB in the end (delta: -42.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,366 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 133.7 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.49 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 78.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,368 INFO L168 Benchmark]: Boogie Preprocessor took 107.89 ms. Allocated memory was 133.7 MB in the beginning and 198.7 MB in the end (delta: 65.0 MB). Free memory was 78.9 MB in the beginning and 175.8 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,369 INFO L168 Benchmark]: RCFGBuilder took 210.53 ms. Allocated memory is still 198.7 MB. Free memory was 175.8 MB in the beginning and 165.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,370 INFO L168 Benchmark]: TraceAbstraction took 642.87 ms. Allocated memory is still 198.7 MB. Free memory was 164.9 MB in the beginning and 130.4 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-02 11:33:21,375 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 133.7 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 220.49 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 78.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.89 ms. Allocated memory was 133.7 MB in the beginning and 198.7 MB in the end (delta: 65.0 MB). Free memory was 78.9 MB in the beginning and 175.8 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 210.53 ms. Allocated memory is still 198.7 MB. Free memory was 175.8 MB in the beginning and 165.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 642.87 ms. Allocated memory is still 198.7 MB. Free memory was 164.9 MB in the beginning and 130.4 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 14 SDslu, 22 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...