/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_init5_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:49,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:49,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:49,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:26:49,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:49,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:49,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:49,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:49,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:49,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:49,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:49,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:49,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:49,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:49,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:49,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:49,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:49,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:49,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:49,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:49,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:26:49,515 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:49,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:49,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:49,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:49,517 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:49,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:49,517 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:49,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:49,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:49,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:49,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:49,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:49,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:49,519 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:49,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:49,519 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:49,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:49,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:49,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:49,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:49,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:49,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:49,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:49,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:49,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:49,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:49,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:49,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:49,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:26:49,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:49,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:49,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:49,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:49,865 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:49,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2019-11-06 22:26:49,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1d7fc0d/337123a3b0c440e2ae8094535bb2b74f/FLAG47707fcb4 [2019-11-06 22:26:50,406 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:50,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init5_ground-2.i [2019-11-06 22:26:50,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1d7fc0d/337123a3b0c440e2ae8094535bb2b74f/FLAG47707fcb4 [2019-11-06 22:26:50,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1d7fc0d/337123a3b0c440e2ae8094535bb2b74f [2019-11-06 22:26:50,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:50,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:50,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:50,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:50,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:50,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:50" (1/1) ... [2019-11-06 22:26:50,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee7042c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50, skipping insertion in model container [2019-11-06 22:26:50,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:50" (1/1) ... [2019-11-06 22:26:50,866 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:50,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:51,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:51,112 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:51,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:51,166 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:51,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51 WrapperNode [2019-11-06 22:26:51,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:51,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:51,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:51,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:51,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (1/1) ... [2019-11-06 22:26:51,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:51,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:51,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:51,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:51,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (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 [2019-11-06 22:26:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:51,640 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:51,641 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-06 22:26:51,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:51 BoogieIcfgContainer [2019-11-06 22:26:51,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:51,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:51,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:51,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:51,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:50" (1/3) ... [2019-11-06 22:26:51,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dbd898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:51, skipping insertion in model container [2019-11-06 22:26:51,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:51" (2/3) ... [2019-11-06 22:26:51,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dbd898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:51, skipping insertion in model container [2019-11-06 22:26:51,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:51" (3/3) ... [2019-11-06 22:26:51,667 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-2.i [2019-11-06 22:26:51,681 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:51,690 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:51,702 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:51,731 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:51,731 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:51,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:51,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:51,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:51,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:51,732 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:51,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-06 22:26:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 22:26:51,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:51,754 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:51,756 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1721973062, now seen corresponding path program 1 times [2019-11-06 22:26:51,769 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:51,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987474267] [2019-11-06 22:26:51,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:51,890 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987474267] [2019-11-06 22:26:51,890 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:51,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:51,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224039794] [2019-11-06 22:26:51,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:51,898 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:51,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:51,916 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-11-06 22:26:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:51,940 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2019-11-06 22:26:51,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:51,942 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-11-06 22:26:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:51,949 INFO L225 Difference]: With dead ends: 55 [2019-11-06 22:26:51,950 INFO L226 Difference]: Without dead ends: 26 [2019-11-06 22:26:51,953 INFO L630 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 [2019-11-06 22:26:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-06 22:26:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-06 22:26:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 22:26:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-11-06 22:26:51,989 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2019-11-06 22:26:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:51,989 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-11-06 22:26:51,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-11-06 22:26:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 22:26:51,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:51,991 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:51,992 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash -13266878, now seen corresponding path program 1 times [2019-11-06 22:26:51,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:51,993 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555858429] [2019-11-06 22:26:51,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:52,052 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555858429] [2019-11-06 22:26:52,053 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:52,054 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:52,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008459698] [2019-11-06 22:26:52,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:52,056 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:52,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:52,057 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2019-11-06 22:26:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:52,152 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2019-11-06 22:26:52,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:52,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-06 22:26:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:52,154 INFO L225 Difference]: With dead ends: 50 [2019-11-06 22:26:52,154 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:26:52,156 INFO L630 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 [2019-11-06 22:26:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:26:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-06 22:26:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:26:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-06 22:26:52,163 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2019-11-06 22:26:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:52,164 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-06 22:26:52,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-06 22:26:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 22:26:52,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:52,165 INFO L410 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] [2019-11-06 22:26:52,166 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:52,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash -927642988, now seen corresponding path program 1 times [2019-11-06 22:26:52,167 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:52,167 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924615285] [2019-11-06 22:26:52,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:26:52,257 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924615285] [2019-11-06 22:26:52,257 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317487847] [2019-11-06 22:26:52,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:52,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:52,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:26:52,381 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:26:52,420 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1796027033] [2019-11-06 22:26:52,427 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-11-06 22:26:52,465 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:52,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:52,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:52,523 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. [2019-11-06 22:26:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:52,527 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:52,563 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:52,564 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:52,566 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-11-06 22:26:52,566 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:52,567 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:52,567 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:52,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62966060] [2019-11-06 22:26:52,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:52,569 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:52,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:52,569 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 2 states. [2019-11-06 22:26:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:52,573 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-06 22:26:52,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:52,573 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-11-06 22:26:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:52,574 INFO L225 Difference]: With dead ends: 31 [2019-11-06 22:26:52,574 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:52,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:52,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-06 22:26:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:52,578 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:52,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:52,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:52,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:52,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:52,831 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:52,832 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:52,833 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:52,833 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:52,833 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:52,833 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:52,833 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:52,833 INFO L443 ceAbstractionStarter]: For program point L31-2(lines 31 33) no Hoare annotation was computed. [2019-11-06 22:26:52,834 INFO L439 ceAbstractionStarter]: At program point L31-3(lines 31 33) the Hoare annotation is: false [2019-11-06 22:26:52,834 INFO L443 ceAbstractionStarter]: For program point L31-4(lines 31 33) no Hoare annotation was computed. [2019-11-06 22:26:52,834 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 35) no Hoare annotation was computed. [2019-11-06 22:26:52,834 INFO L439 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: false [2019-11-06 22:26:52,834 INFO L443 ceAbstractionStarter]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-11-06 22:26:52,835 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: false [2019-11-06 22:26:52,835 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-06 22:26:52,835 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 19) the Hoare annotation is: false [2019-11-06 22:26:52,835 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2019-11-06 22:26:52,835 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 24) the Hoare annotation is: false [2019-11-06 22:26:52,835 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 24) no Hoare annotation was computed. [2019-11-06 22:26:52,836 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 35) no Hoare annotation was computed. [2019-11-06 22:26:52,836 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 35) the Hoare annotation is: true [2019-11-06 22:26:52,836 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 29) the Hoare annotation is: false [2019-11-06 22:26:52,836 INFO L443 ceAbstractionStarter]: For program point L26-3(lines 26 29) no Hoare annotation was computed. [2019-11-06 22:26:52,836 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 6 9) the Hoare annotation is: false [2019-11-06 22:26:52,836 INFO L443 ceAbstractionStarter]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-11-06 22:26:52,837 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:52,837 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:52,837 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:52,837 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:52,837 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:52,838 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:52,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:52 BoogieIcfgContainer [2019-11-06 22:26:52,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:52,859 INFO L168 Benchmark]: Toolchain (without parser) took 2007.68 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 101.9 MB in the end (delta: 296.6 kB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,861 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.98 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,865 INFO L168 Benchmark]: Boogie Preprocessor took 128.50 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 180.0 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,868 INFO L168 Benchmark]: RCFGBuilder took 346.46 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 164.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,874 INFO L168 Benchmark]: TraceAbstraction took 1202.25 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 101.9 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:52,887 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.98 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.50 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 180.0 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.46 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 164.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1202.25 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 101.9 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 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 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 15 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 12 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3015 SizeOfPredicates, 1 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 102, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.97, AVG_VARS_REMOVED_DURING_WEAKENING: 0.52, AVG_WEAKENED_CONJUNCTS: 0.24, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...