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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:47,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:47,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:47,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:29:47,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:47,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:47,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:47,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:47,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:47,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:47,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:47,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:47,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:47,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:47,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:47,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:47,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:47,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:47,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:47,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:47,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:47,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:47,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:47,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:47,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:47,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:47,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:47,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:47,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:29:47,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:47,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:47,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:47,911 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:47,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:47,912 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:47,912 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:47,912 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:47,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:47,913 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:47,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:47,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:47,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:47,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:47,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:47,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:47,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:47,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:47,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:47,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:47,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:47,916 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:47,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:47,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:47,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:47,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:47,917 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:47,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:47,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:47,917 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:47,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:47,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:47,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:47,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:47,962 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:47,962 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2019-10-02 16:29:48,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70940dab3/c3f061ab935d483795db410a52e56b45/FLAG85143c33b [2019-10-02 16:29:48,465 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:48,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2019-10-02 16:29:48,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70940dab3/c3f061ab935d483795db410a52e56b45/FLAG85143c33b [2019-10-02 16:29:48,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70940dab3/c3f061ab935d483795db410a52e56b45 [2019-10-02 16:29:48,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:48,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:48,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:48,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:48,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:48,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:48" (1/1) ... [2019-10-02 16:29:48,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f25ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:48, skipping insertion in model container [2019-10-02 16:29:48,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:48" (1/1) ... [2019-10-02 16:29:48,871 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:48,885 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:49,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:49,056 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:49,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:49,194 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:49,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49 WrapperNode [2019-10-02 16:29:49,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:49,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:49,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:49,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:49,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:49,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:49,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:49,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:49,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (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 16:29:49,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:49,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:49,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:49,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:49,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:49,602 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:49,603 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-02 16:29:49,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:49 BoogieIcfgContainer [2019-10-02 16:29:49,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:49,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:49,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:49,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:49,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:48" (1/3) ... [2019-10-02 16:29:49,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3093c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:49, skipping insertion in model container [2019-10-02 16:29:49,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49" (2/3) ... [2019-10-02 16:29:49,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3093c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:49, skipping insertion in model container [2019-10-02 16:29:49,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:49" (3/3) ... [2019-10-02 16:29:49,614 INFO L109 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-1.i [2019-10-02 16:29:49,630 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:49,647 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:49,680 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:49,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:49,717 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:49,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:49,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:49,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:49,718 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:49,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:49,718 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-02 16:29:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:49,738 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:49,739 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:49,741 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:49,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1156372912, now seen corresponding path program 1 times [2019-10-02 16:29:49,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:49,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:49,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:49,798 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:49,872 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 16:29:49,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:49,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:49,875 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:49,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:49,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:49,908 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-02 16:29:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:49,936 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-02 16:29:49,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:49,937 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 16:29:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:49,952 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:29:49,952 INFO L226 Difference]: Without dead ends: 40 [2019-10-02 16:29:49,957 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 16:29:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-02 16:29:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-02 16:29:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-02 16:29:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-02 16:29:50,021 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 16 [2019-10-02 16:29:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,023 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-02 16:29:50,023 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-10-02 16:29:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:29:50,026 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,026 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,027 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2078459264, now seen corresponding path program 1 times [2019-10-02 16:29:50,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,037 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,130 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 16:29:50,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:50,132 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:50,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,137 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 3 states. [2019-10-02 16:29:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,176 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-10-02 16:29:50,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:50,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 16:29:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,179 INFO L225 Difference]: With dead ends: 42 [2019-10-02 16:29:50,179 INFO L226 Difference]: Without dead ends: 42 [2019-10-02 16:29:50,180 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-02 16:29:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-02 16:29:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-02 16:29:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2019-10-02 16:29:50,195 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 16 [2019-10-02 16:29:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,196 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-10-02 16:29:50,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2019-10-02 16:29:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:29:50,198 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,199 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,200 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1609541534, now seen corresponding path program 1 times [2019-10-02 16:29:50,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,206 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:50,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:50,281 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,283 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 3 states. [2019-10-02 16:29:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,361 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2019-10-02 16:29:50,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:50,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-02 16:29:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,364 INFO L225 Difference]: With dead ends: 59 [2019-10-02 16:29:50,364 INFO L226 Difference]: Without dead ends: 59 [2019-10-02 16:29:50,365 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-02 16:29:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2019-10-02 16:29:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-02 16:29:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2019-10-02 16:29:50,378 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2019-10-02 16:29:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,378 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2019-10-02 16:29:50,378 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2019-10-02 16:29:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:29:50,379 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,380 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,380 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -898844059, now seen corresponding path program 1 times [2019-10-02 16:29:50,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,382 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:50,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:50,421 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:50,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,423 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 3 states. [2019-10-02 16:29:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,482 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2019-10-02 16:29:50,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:50,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-02 16:29:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,486 INFO L225 Difference]: With dead ends: 59 [2019-10-02 16:29:50,486 INFO L226 Difference]: Without dead ends: 59 [2019-10-02 16:29:50,487 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-02 16:29:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2019-10-02 16:29:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-02 16:29:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2019-10-02 16:29:50,503 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 20 [2019-10-02 16:29:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,503 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2019-10-02 16:29:50,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2019-10-02 16:29:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:29:50,505 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,505 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,506 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1708190685, now seen corresponding path program 1 times [2019-10-02 16:29:50,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,509 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:50,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:50,577 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:50,579 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-10-02 16:29:50,582 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [28], [35], [52], [54], [62], [70], [132], [135], [137], [143], [144], [145], [147] [2019-10-02 16:29:50,614 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:50,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:50,668 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:50,669 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 16:29:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,674 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:50,709 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:50,709 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:50,711 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-02 16:29:50,711 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:50,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:50,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:50,712 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:50,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:50,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:50,713 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 2 states. [2019-10-02 16:29:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,714 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:50,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:50,715 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 16:29:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,715 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:50,715 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:50,716 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 16:29:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:50,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-02 16:29:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,717 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:50,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:50,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:50,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:50 BoogieIcfgContainer [2019-10-02 16:29:50,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:50,725 INFO L168 Benchmark]: Toolchain (without parser) took 1867.91 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 87.2 MB in the beginning and 98.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,727 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.77 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.8 MB in the beginning and 177.4 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,729 INFO L168 Benchmark]: Boogie Preprocessor took 42.01 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 175.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,730 INFO L168 Benchmark]: RCFGBuilder took 366.84 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 156.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,730 INFO L168 Benchmark]: TraceAbstraction took 1117.19 ms. Allocated memory is still 199.8 MB. Free memory was 155.5 MB in the beginning and 98.1 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:50,734 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.77 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.8 MB in the beginning and 177.4 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.01 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 175.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.84 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 156.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1117.19 ms. Allocated memory is still 199.8 MB. Free memory was 155.5 MB in the beginning and 98.1 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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 4 procedures, 45 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 42 SDslu, 120 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9210526315789473 AbsIntWeakeningRatio, 0.9473684210526315 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 1715 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...