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/standard_init6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:28:36,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:28:36,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:28:36,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:28:36,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:28:36,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:28:36,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:28:36,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:28:36,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:28:36,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:28:36,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:28:36,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:28:36,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:28:36,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:28:36,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:28:36,806 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 [2019-09-09 05:28:36,834 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:28:36,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:28:36,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:28:36,835 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:28:36,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:28:36,837 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:28:36,837 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:28:36,838 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:28:36,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:28:36,838 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:28:36,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:28:36,839 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:28:36,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:28:36,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:28:36,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:28:36,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:28:36,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:28:36,841 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:28:36,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:28:36,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:28:36,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:28:36,842 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:28:36,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:28:36,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:28:36,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:28:36,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:28:36,844 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:28:36,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:28:36,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:28:36,844 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:28:36,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:28:36,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:28:36,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:28:36,894 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:28:36,894 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:28:36,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init6_ground-2.i [2019-09-09 05:28:36,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32569a2f9/7121ac22edf14ed7adf5470ef86d725e/FLAG720dcf877 [2019-09-09 05:28:37,400 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:28:37,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init6_ground-2.i [2019-09-09 05:28:37,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32569a2f9/7121ac22edf14ed7adf5470ef86d725e/FLAG720dcf877 [2019-09-09 05:28:37,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32569a2f9/7121ac22edf14ed7adf5470ef86d725e [2019-09-09 05:28:37,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:28:37,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:28:37,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:37,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:28:37,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:28:37,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:37" (1/1) ... [2019-09-09 05:28:37,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e5ebd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:37, skipping insertion in model container [2019-09-09 05:28:37,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:37" (1/1) ... [2019-09-09 05:28:37,823 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:28:37,841 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:28:38,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:38,028 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:28:38,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:38,073 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:28:38,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38 WrapperNode [2019-09-09 05:28:38,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:38,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:28:38,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:28:38,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:28:38,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (1/1) ... [2019-09-09 05:28:38,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:28:38,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:28:38,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:28:38,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:28:38,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (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 [2019-09-09 05:28:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:28:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:28:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:28:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:28:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:28:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:28:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:28:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:28:38,567 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:28:38,567 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-09 05:28:38,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:38 BoogieIcfgContainer [2019-09-09 05:28:38,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:28:38,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:28:38,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:28:38,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:28:38,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:28:37" (1/3) ... [2019-09-09 05:28:38,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1499e355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:38, skipping insertion in model container [2019-09-09 05:28:38,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:38" (2/3) ... [2019-09-09 05:28:38,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1499e355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:38, skipping insertion in model container [2019-09-09 05:28:38,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:38" (3/3) ... [2019-09-09 05:28:38,588 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-2.i [2019-09-09 05:28:38,610 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:28:38,625 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:28:38,659 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:28:38,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:28:38,684 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:28:38,684 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:28:38,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:28:38,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:28:38,684 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:28:38,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:28:38,685 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:28:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-09 05:28:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-09 05:28:38,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:38,708 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:28:38,710 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:38,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1058720290, now seen corresponding path program 1 times [2019-09-09 05:28:38,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:38,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:38,762 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:28:38,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:38,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:28:38,850 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:38,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:38,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:38,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:38,869 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-09 05:28:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:38,889 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-09-09 05:28:38,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:38,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-09 05:28:38,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:38,901 INFO L225 Difference]: With dead ends: 33 [2019-09-09 05:28:38,901 INFO L226 Difference]: Without dead ends: 28 [2019-09-09 05:28:38,903 INFO L628 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 [2019-09-09 05:28:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-09 05:28:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-09 05:28:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-09 05:28:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-09-09 05:28:38,947 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2019-09-09 05:28:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:38,947 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-09-09 05:28:38,947 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-09-09 05:28:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-09 05:28:38,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:38,949 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:28:38,950 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1432039210, now seen corresponding path program 1 times [2019-09-09 05:28:38,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:38,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:38,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:38,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:38,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:28:39,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:39,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:28:39,010 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:39,011 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:28:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:28:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:28:39,013 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2019-09-09 05:28:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:39,087 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-09-09 05:28:39,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:28:39,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-09-09 05:28:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:39,089 INFO L225 Difference]: With dead ends: 34 [2019-09-09 05:28:39,089 INFO L226 Difference]: Without dead ends: 34 [2019-09-09 05:28:39,091 INFO L628 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 [2019-09-09 05:28:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-09 05:28:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-09 05:28:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-09 05:28:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-09-09 05:28:39,099 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 23 [2019-09-09 05:28:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:39,099 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-09-09 05:28:39,099 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:28:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-09-09 05:28:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-09 05:28:39,101 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:39,101 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:28:39,102 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:39,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2002754829, now seen corresponding path program 1 times [2019-09-09 05:28:39,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:39,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:39,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:39,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:39,104 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-09 05:28:39,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:28:39,178 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:28:39,179 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2019-09-09 05:28:39,181 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [38], [40], [44], [51], [53], [57], [64], [66], [70], [77], [79], [83], [91], [101], [104], [106], [112], [113], [114], [116] [2019-09-09 05:28:39,230 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:28:39,230 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:28:39,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:28:39,335 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 17 variables. [2019-09-09 05:28:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:39,339 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:28:39,385 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:28:39,386 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:28:39,388 INFO L420 sIntCurrentIteration]: We unified 28 AI predicates to 28 [2019-09-09 05:28:39,388 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:28:39,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:28:39,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:28:39,391 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:39,393 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:39,394 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 2 states. [2019-09-09 05:28:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:39,401 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:28:39,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:39,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-09-09 05:28:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:39,402 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:28:39,402 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:28:39,403 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:28:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:28:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:28:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:28:39,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-09-09 05:28:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:39,406 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:28:39,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:28:39,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:28:39,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:28:39 BoogieIcfgContainer [2019-09-09 05:28:39,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:28:39,416 INFO L168 Benchmark]: Toolchain (without parser) took 1611.03 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 116.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,418 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.24 ms. Allocated memory is still 133.2 MB. Free memory was 88.8 MB in the beginning and 78.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,422 INFO L168 Benchmark]: Boogie Preprocessor took 149.23 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.6 MB in the beginning and 176.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,423 INFO L168 Benchmark]: RCFGBuilder took 343.72 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 160.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,425 INFO L168 Benchmark]: TraceAbstraction took 833.66 ms. Allocated memory is still 200.3 MB. Free memory was 159.7 MB in the beginning and 116.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:39,432 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 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.24 ms. Allocated memory is still 133.2 MB. Free memory was 88.8 MB in the beginning and 78.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.23 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.6 MB in the beginning and 176.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.72 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 160.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 833.66 ms. Allocated memory is still 200.3 MB. Free memory was 159.7 MB in the beginning and 116.4 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 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, 33 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 18 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9732142857142857 AbsIntWeakeningRatio, 0.5 AbsIntAvgWeakeningVarsNumRemoved, 0.21428571428571427 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 1908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...