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/loops/invert_string-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:48:43,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:43,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:43,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:48:43,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:43,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:43,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:43,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:43,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:43,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:43,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:43,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:43,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:43,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:43,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:43,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:43,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:48:43,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:43,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:43,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:43,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:43,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:43,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:43,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:43,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:43,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:43,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:43,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:43,767 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 [2019-09-10 01:48:43,780 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:43,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:43,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:43,781 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:43,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:43,782 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:43,782 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:43,782 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:43,783 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:43,783 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:43,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:43,784 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:43,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:43,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:43,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:43,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:43,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:43,785 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:43,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:43,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:43,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:43,786 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:43,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:43,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:43,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:43,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:43,787 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:43,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:43,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:43,787 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:43,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:43,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:43,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:43,835 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:43,835 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:43,836 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string-1.c [2019-09-10 01:48:43,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435eb6b9e/ab83e6d31cb048679eea3ebb26bd2049/FLAG4d5d0933a [2019-09-10 01:48:44,337 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:44,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-1.c [2019-09-10 01:48:44,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435eb6b9e/ab83e6d31cb048679eea3ebb26bd2049/FLAG4d5d0933a [2019-09-10 01:48:44,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435eb6b9e/ab83e6d31cb048679eea3ebb26bd2049 [2019-09-10 01:48:44,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:44,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:44,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:44,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:44,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:44,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:44,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4db4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44, skipping insertion in model container [2019-09-10 01:48:44,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:44,772 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:44,789 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:44,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:44,972 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:44,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:45,100 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:45,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45 WrapperNode [2019-09-10 01:48:45,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:45,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:45,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:45,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:45,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (1/1) ... [2019-09-10 01:48:45,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:45,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:45,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:45,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:45,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (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 [2019-09-10 01:48:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:48:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:45,488 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:45,489 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-10 01:48:45,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:45 BoogieIcfgContainer [2019-09-10 01:48:45,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:45,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:45,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:45,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:45,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:44" (1/3) ... [2019-09-10 01:48:45,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6d8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:45, skipping insertion in model container [2019-09-10 01:48:45,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:45" (2/3) ... [2019-09-10 01:48:45,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6d8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:45, skipping insertion in model container [2019-09-10 01:48:45,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:45" (3/3) ... [2019-09-10 01:48:45,497 INFO L109 eAbstractionObserver]: Analyzing ICFG invert_string-1.c [2019-09-10 01:48:45,504 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:45,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:45,526 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:45,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:45,553 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:45,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:45,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:45,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:45,553 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:45,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:45,553 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-09-10 01:48:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:48:45,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:45,574 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:45,576 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2019-09-10 01:48:45,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:45,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:45,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,624 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:45,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:45,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:45,718 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:45,721 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:45,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:45,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:45,737 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-09-10 01:48:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:45,754 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-09-10 01:48:45,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:45,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-10 01:48:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:45,765 INFO L225 Difference]: With dead ends: 27 [2019-09-10 01:48:45,765 INFO L226 Difference]: Without dead ends: 22 [2019-09-10 01:48:45,767 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 [2019-09-10 01:48:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-10 01:48:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-10 01:48:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-10 01:48:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-10 01:48:45,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-09-10 01:48:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:45,804 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-10 01:48:45,804 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-10 01:48:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:48:45,805 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:45,805 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:45,806 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -262172122, now seen corresponding path program 1 times [2019-09-10 01:48:45,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:45,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:45,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,808 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:45,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:45,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:48:45,930 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:45,931 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:48:45,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:48:45,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:48:45,932 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-09-10 01:48:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:46,029 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-10 01:48:46,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:48:46,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-10 01:48:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:46,031 INFO L225 Difference]: With dead ends: 23 [2019-09-10 01:48:46,031 INFO L226 Difference]: Without dead ends: 23 [2019-09-10 01:48:46,032 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-10 01:48:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-10 01:48:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-10 01:48:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-10 01:48:46,038 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-09-10 01:48:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:46,039 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-10 01:48:46,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:48:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-10 01:48:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:48:46,040 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:46,040 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:46,040 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:46,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:46,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1485613060, now seen corresponding path program 1 times [2019-09-10 01:48:46,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:46,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,043 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:48:46,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:46,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:48:46,108 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:46,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:48:46,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:48:46,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:46,109 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-09-10 01:48:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:46,133 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-10 01:48:46,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:48:46,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-10 01:48:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:46,135 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:48:46,135 INFO L226 Difference]: Without dead ends: 25 [2019-09-10 01:48:46,136 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 [2019-09-10 01:48:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-10 01:48:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-09-10 01:48:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 01:48:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-10 01:48:46,140 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2019-09-10 01:48:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:46,141 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-10 01:48:46,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:48:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-10 01:48:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:48:46,142 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:46,142 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:46,142 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:46,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2019-09-10 01:48:46,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:46,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:46,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,144 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:46,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:46,798 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:46,799 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-10 01:48:46,801 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [41], [51], [54], [56], [62], [63], [64], [66] [2019-09-10 01:48:46,848 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:46,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:46,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 01:48:47,003 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:47,005 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 7. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 28 variables. [2019-09-10 01:48:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:47,009 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:47,060 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:48:47,060 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:47,062 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-10 01:48:47,062 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:47,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:47,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 01:48:47,063 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:47,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:47,065 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 2 states. [2019-09-10 01:48:47,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:47,066 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:48:47,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:47,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-10 01:48:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:47,066 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:48:47,066 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:47,067 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:47,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-10 01:48:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:47,068 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:47,068 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:47,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:47,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:47 BoogieIcfgContainer [2019-09-10 01:48:47,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:47,074 INFO L168 Benchmark]: Toolchain (without parser) took 2314.81 ms. Allocated memory was 136.3 MB in the beginning and 234.4 MB in the end (delta: 98.0 MB). Free memory was 91.3 MB in the beginning and 171.7 MB in the end (delta: -80.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,076 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 109.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.60 ms. Allocated memory was 136.3 MB in the beginning and 202.9 MB in the end (delta: 66.6 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,078 INFO L168 Benchmark]: Boogie Preprocessor took 38.35 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,079 INFO L168 Benchmark]: RCFGBuilder took 349.93 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 162.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,080 INFO L168 Benchmark]: TraceAbstraction took 1581.29 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 162.9 MB in the beginning and 171.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:47,084 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 109.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.60 ms. Allocated memory was 136.3 MB in the beginning and 202.9 MB in the end (delta: 66.6 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.35 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.93 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 162.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1581.29 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 162.9 MB in the beginning and 171.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 27 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 13 SDslu, 35 SDs, 0 SdLazy, 23 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8888888888888888 AbsIntWeakeningRatio, 1.2222222222222223 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 4878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...