/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_two_index_05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:11,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:11,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:11,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:11,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:11,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:11,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:11,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:11,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:11,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:11,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:11,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:11,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:11,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:11,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:11,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:11,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:11,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:11,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:11,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:11,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:11,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:11,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:11,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:11,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:11,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:11,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:11,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:11,740 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 22:27:11,756 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:11,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:11,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:11,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:11,759 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:11,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:11,760 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:11,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:11,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:11,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:11,761 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:11,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:11,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:11,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:11,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:11,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:11,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:11,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:11,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:11,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:11,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:11,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:11,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:11,766 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 22:27:12,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:12,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:12,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:12,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:12,054 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:12,055 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_05.i [2019-11-06 22:27:12,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231853935/f8c3ce4b087a41be9c4376bd26effc72/FLAGa678da45b [2019-11-06 22:27:12,527 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:12,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_05.i [2019-11-06 22:27:12,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231853935/f8c3ce4b087a41be9c4376bd26effc72/FLAGa678da45b [2019-11-06 22:27:12,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231853935/f8c3ce4b087a41be9c4376bd26effc72 [2019-11-06 22:27:12,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:12,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:12,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:12,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:12,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc11e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12, skipping insertion in model container [2019-11-06 22:27:12,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,959 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:12,981 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:13,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:13,194 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:13,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:13,235 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:13,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13 WrapperNode [2019-11-06 22:27:13,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:13,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:13,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:13,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:13,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (1/1) ... [2019-11-06 22:27:13,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:13,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:13,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:13,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:13,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (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 22:27:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:13,647 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:13,647 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:27:13,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:13 BoogieIcfgContainer [2019-11-06 22:27:13,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:13,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:13,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:13,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:13,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:12" (1/3) ... [2019-11-06 22:27:13,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f9fc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:13, skipping insertion in model container [2019-11-06 22:27:13,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:13" (2/3) ... [2019-11-06 22:27:13,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f9fc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:13, skipping insertion in model container [2019-11-06 22:27:13,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:13" (3/3) ... [2019-11-06 22:27:13,681 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_05.i [2019-11-06 22:27:13,708 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:13,728 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:13,745 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:13,768 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:13,768 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:13,768 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:13,768 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:13,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:13,769 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:13,769 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:13,769 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-06 22:27:13,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:13,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:13,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:13,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2019-11-06 22:27:13,804 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:13,805 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294336529] [2019-11-06 22:27:13,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,920 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 22:27:13,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294336529] [2019-11-06 22:27:13,921 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:13,921 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:13,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175665039] [2019-11-06 22:27:13,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:13,928 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:13,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:13,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:13,946 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-11-06 22:27:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:13,971 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-06 22:27:13,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:13,973 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:13,984 INFO L225 Difference]: With dead ends: 41 [2019-11-06 22:27:13,984 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 22:27:13,988 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 22:27:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 22:27:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 22:27:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 22:27:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-06 22:27:14,033 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-11-06 22:27:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:14,034 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-06 22:27:14,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-06 22:27:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:14,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:14,035 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:14,036 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:14,036 INFO L82 PathProgramCache]: Analyzing trace with hash 905206694, now seen corresponding path program 1 times [2019-11-06 22:27:14,037 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:14,037 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884318958] [2019-11-06 22:27:14,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:14,112 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 22:27:14,112 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884318958] [2019-11-06 22:27:14,113 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:14,113 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:14,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436322722] [2019-11-06 22:27:14,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:14,115 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:14,116 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-11-06 22:27:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:14,186 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-06 22:27:14,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:14,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:27:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:14,188 INFO L225 Difference]: With dead ends: 32 [2019-11-06 22:27:14,189 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 22:27:14,190 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 22:27:14,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 22:27:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 22:27:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 22:27:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-06 22:27:14,196 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-11-06 22:27:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:14,197 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-06 22:27:14,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-06 22:27:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:27:14,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:14,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:14,199 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash -764882998, now seen corresponding path program 1 times [2019-11-06 22:27:14,200 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:14,200 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593440572] [2019-11-06 22:27:14,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:14,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593440572] [2019-11-06 22:27:14,262 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:14,262 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:14,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720437988] [2019-11-06 22:27:14,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:14,264 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:14,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:14,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:14,264 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-11-06 22:27:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:14,294 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-11-06 22:27:14,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:14,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:27:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:14,297 INFO L225 Difference]: With dead ends: 34 [2019-11-06 22:27:14,297 INFO L226 Difference]: Without dead ends: 24 [2019-11-06 22:27:14,298 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 22:27:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-06 22:27:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-06 22:27:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-06 22:27:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-06 22:27:14,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-11-06 22:27:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:14,310 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-06 22:27:14,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-06 22:27:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 22:27:14,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:14,312 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:14,313 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2019-11-06 22:27:14,314 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:14,314 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310934424] [2019-11-06 22:27:14,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:14,417 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 22:27:14,417 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310934424] [2019-11-06 22:27:14,418 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999077666] [2019-11-06 22:27:14,418 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 22:27:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:14,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:14,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:14,530 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 22:27:14,531 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:14,565 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 22:27:14,566 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [21937471] [2019-11-06 22:27:14,583 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-11-06 22:27:14,625 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:14,625 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:14,687 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:14,689 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 22 variables. [2019-11-06 22:27:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:14,692 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:14,725 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:14,726 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:14,728 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-11-06 22:27:14,728 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:14,729 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:14,729 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-11-06 22:27:14,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912489755] [2019-11-06 22:27:14,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:14,731 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:27:14,732 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-11-06 22:27:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:14,738 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-06 22:27:14,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:14,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-06 22:27:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:14,739 INFO L225 Difference]: With dead ends: 21 [2019-11-06 22:27:14,739 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:14,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:27:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:14,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-06 22:27:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:14,742 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:14,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:14,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:14,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:14,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:14,980 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,981 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,981 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,981 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,981 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,982 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,982 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,982 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: false [2019-11-06 22:27:14,983 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-06 22:27:14,983 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 32) no Hoare annotation was computed. [2019-11-06 22:27:14,983 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 30) the Hoare annotation is: false [2019-11-06 22:27:14,983 INFO L443 ceAbstractionStarter]: For program point L25-3(lines 25 30) no Hoare annotation was computed. [2019-11-06 22:27:14,983 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 22) the Hoare annotation is: false [2019-11-06 22:27:14,983 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 22) no Hoare annotation was computed. [2019-11-06 22:27:14,984 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 32) no Hoare annotation was computed. [2019-11-06 22:27:14,984 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 32) the Hoare annotation is: true [2019-11-06 22:27:14,984 INFO L439 ceAbstractionStarter]: At program point L10-2(lines 10 14) the Hoare annotation is: false [2019-11-06 22:27:14,984 INFO L443 ceAbstractionStarter]: For program point L10-3(lines 10 14) no Hoare annotation was computed. [2019-11-06 22:27:14,985 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,985 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,985 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:27:14,985 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,985 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,986 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:14 BoogieIcfgContainer [2019-11-06 22:27:14,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:15,002 INFO L168 Benchmark]: Toolchain (without parser) took 2057.91 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 98.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:15,007 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:27:15,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.84 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:15,010 INFO L168 Benchmark]: Boogie Preprocessor took 121.91 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.3 MB in the beginning and 178.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:15,016 INFO L168 Benchmark]: RCFGBuilder took 299.65 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 163.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:15,017 INFO L168 Benchmark]: TraceAbstraction took 1338.23 ms. Allocated memory is still 200.8 MB. Free memory was 163.3 MB in the beginning and 98.4 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:15,025 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.84 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.91 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.3 MB in the beginning and 178.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.65 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 163.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1338.23 ms. Allocated memory is still 200.8 MB. Free memory was 163.3 MB in the beginning and 98.4 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 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: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 1 SDslu, 24 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 9 HoareAnnotationTreeSize, 12 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, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635 SizeOfPredicates, 1 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 109, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.90625, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0, AVG_WEAKENED_CONJUNCTS: 0.375, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...