/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_vector_difference_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:16,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:16,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:16,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:16,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:16,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:16,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:16,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:16,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:16,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:16,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:16,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:16,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:16,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:16,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:16,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:16,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:16,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:16,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:16,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:16,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:16,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:16,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:16,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:16,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:16,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:16,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:16,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:16,582 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 22:27:16,609 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:16,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:16,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:16,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:16,611 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:16,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:16,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:16,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:16,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:16,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:16,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:16,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:16,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:16,613 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:16,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:16,613 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:16,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:16,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:16,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:16,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:16,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:16,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:16,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:16,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:16,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:16,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:16,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:16,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:16,616 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 22:27:16,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:16,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:16,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:16,929 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:16,929 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:16,930 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-11-06 22:27:17,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae1fac9d/3c76479ca08f4c99ad13902528480b5e/FLAG021dd0529 [2019-11-06 22:27:17,455 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:17,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-11-06 22:27:17,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae1fac9d/3c76479ca08f4c99ad13902528480b5e/FLAG021dd0529 [2019-11-06 22:27:17,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae1fac9d/3c76479ca08f4c99ad13902528480b5e [2019-11-06 22:27:17,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:17,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:17,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:17,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:17,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:17,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:17" (1/1) ... [2019-11-06 22:27:17,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e64f6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17, skipping insertion in model container [2019-11-06 22:27:17,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:17" (1/1) ... [2019-11-06 22:27:17,890 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:17,911 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:18,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:18,118 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:18,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:18,157 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:18,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18 WrapperNode [2019-11-06 22:27:18,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:18,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:18,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:18,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:18,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (1/1) ... [2019-11-06 22:27:18,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:18,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:18,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:18,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:18,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (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 22:27:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:18,626 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:18,627 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:27:18,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:18 BoogieIcfgContainer [2019-11-06 22:27:18,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:18,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:18,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:18,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:18,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:17" (1/3) ... [2019-11-06 22:27:18,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741a91af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:18, skipping insertion in model container [2019-11-06 22:27:18,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:18" (2/3) ... [2019-11-06 22:27:18,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741a91af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:18, skipping insertion in model container [2019-11-06 22:27:18,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:18" (3/3) ... [2019-11-06 22:27:18,637 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_vector_difference_ground.i [2019-11-06 22:27:18,646 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:18,653 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:18,666 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:18,690 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:18,690 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:18,690 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:18,691 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:18,691 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:18,691 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:18,691 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:18,691 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-06 22:27:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:18,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:18,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:18,718 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1498727252, now seen corresponding path program 1 times [2019-11-06 22:27:18,730 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:18,730 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672954097] [2019-11-06 22:27:18,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:18,863 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 22:27:18,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672954097] [2019-11-06 22:27:18,865 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:18,865 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:18,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908247983] [2019-11-06 22:27:18,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:18,871 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:18,889 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-06 22:27:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:18,912 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-06 22:27:18,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:18,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:18,919 INFO L225 Difference]: With dead ends: 44 [2019-11-06 22:27:18,920 INFO L226 Difference]: Without dead ends: 21 [2019-11-06 22:27:18,922 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 22:27:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-06 22:27:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-06 22:27:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-06 22:27:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-06 22:27:18,958 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2019-11-06 22:27:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:18,958 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-06 22:27:18,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-06 22:27:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:18,959 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:18,960 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:18,960 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:18,961 INFO L82 PathProgramCache]: Analyzing trace with hash 756064934, now seen corresponding path program 1 times [2019-11-06 22:27:18,961 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:18,962 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459199852] [2019-11-06 22:27:18,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:19,022 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 22:27:19,025 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459199852] [2019-11-06 22:27:19,026 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:19,026 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:19,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474907620] [2019-11-06 22:27:19,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:19,028 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:19,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:19,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:19,030 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-11-06 22:27:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:19,105 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-11-06 22:27:19,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:19,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:27:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:19,108 INFO L225 Difference]: With dead ends: 37 [2019-11-06 22:27:19,108 INFO L226 Difference]: Without dead ends: 24 [2019-11-06 22:27:19,110 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 22:27:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-06 22:27:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-06 22:27:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 22:27:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-06 22:27:19,122 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-11-06 22:27:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:19,123 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-06 22:27:19,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-06 22:27:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 22:27:19,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:19,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:19,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash 434016106, now seen corresponding path program 1 times [2019-11-06 22:27:19,129 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:19,129 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405109607] [2019-11-06 22:27:19,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:19,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405109607] [2019-11-06 22:27:19,302 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677868980] [2019-11-06 22:27:19,302 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 22:27:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:19,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:19,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:19,453 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:19,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1192444913] [2019-11-06 22:27:19,497 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-11-06 22:27:19,537 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:19,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:19,603 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:19,605 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 28 variables. [2019-11-06 22:27:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:19,609 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:19,643 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:19,643 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:19,645 INFO L553 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-11-06 22:27:19,645 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:19,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:19,646 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:27:19,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229613783] [2019-11-06 22:27:19,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:19,648 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:19,649 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 2 states. [2019-11-06 22:27:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:19,651 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-06 22:27:19,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:19,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-06 22:27:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:19,652 INFO L225 Difference]: With dead ends: 23 [2019-11-06 22:27:19,652 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:19,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 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 22:27:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:19,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-06 22:27:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:19,654 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:19,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:19,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:19,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:19,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:19,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:19,886 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:19,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:19,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:19,887 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:19,887 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:19,887 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:19,887 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 26) no Hoare annotation was computed. [2019-11-06 22:27:19,887 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: false [2019-11-06 22:27:19,887 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-06 22:27:19,887 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: false [2019-11-06 22:27:19,887 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2019-11-06 22:27:19,888 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 26) no Hoare annotation was computed. [2019-11-06 22:27:19,888 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2019-11-06 22:27:19,888 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 15) the Hoare annotation is: false [2019-11-06 22:27:19,888 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 15) no Hoare annotation was computed. [2019-11-06 22:27:19,888 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 26) the Hoare annotation is: true [2019-11-06 22:27:19,888 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2019-11-06 22:27:19,888 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: false [2019-11-06 22:27:19,888 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2019-11-06 22:27:19,889 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:27:19,889 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:27:19,889 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:27:19,889 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:27:19,889 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:27:19,889 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:27:19,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:19 BoogieIcfgContainer [2019-11-06 22:27:19,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:19,901 INFO L168 Benchmark]: Toolchain (without parser) took 2026.68 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.5 MB in the beginning and 105.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:19,902 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:27:19,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.94 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 93.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:19,904 INFO L168 Benchmark]: Boogie Preprocessor took 135.22 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:19,905 INFO L168 Benchmark]: RCFGBuilder took 334.08 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:19,906 INFO L168 Benchmark]: TraceAbstraction took 1269.41 ms. Allocated memory is still 202.9 MB. Free memory was 164.3 MB in the beginning and 105.9 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:19,910 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.94 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 93.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.22 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.08 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1269.41 ms. Allocated memory is still 202.9 MB. Free memory was 164.3 MB in the beginning and 105.9 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 1 SDslu, 16 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 112, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8970588235294118, AVG_VARS_REMOVED_DURING_WEAKENING: 1.1176470588235294, AVG_WEAKENED_CONJUNCTS: 0.35294117647058826, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...