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_03.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:26,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:26,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:26,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:26,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:26,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:26,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:26,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:26,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:26,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:26,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:26,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:26,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:26,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:26,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:26,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:26,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:26,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:26,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:26,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:26,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:26,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:26,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:26,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:26,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:26,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:26,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:26,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:26,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:26,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:26,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:26,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:26,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:26,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:26,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:26,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:26,430 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 [2019-10-14 23:52:26,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:26,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:26,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:26,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:26,460 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:26,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:26,461 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:26,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:26,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:26,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:26,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:26,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:26,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:26,468 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:26,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:26,468 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:26,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:26,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:26,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:26,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:26,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:26,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:26,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:26,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:26,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:26,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:26,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:26,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:26,471 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 [2019-10-14 23:52:26,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:26,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:26,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:26,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:26,768 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:26,769 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_03.i [2019-10-14 23:52:26,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6761658c1/07734555a2a24cb2bb6e94b4932274cf/FLAG60c63e3a5 [2019-10-14 23:52:27,319 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:27,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_03.i [2019-10-14 23:52:27,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6761658c1/07734555a2a24cb2bb6e94b4932274cf/FLAG60c63e3a5 [2019-10-14 23:52:27,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6761658c1/07734555a2a24cb2bb6e94b4932274cf [2019-10-14 23:52:27,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:27,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:27,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:27,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:27,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:27,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27, skipping insertion in model container [2019-10-14 23:52:27,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,730 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:27,751 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:28,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:28,034 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:28,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:28,090 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:28,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28 WrapperNode [2019-10-14 23:52:28,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:28,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:28,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:28,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:28,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (1/1) ... [2019-10-14 23:52:28,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:28,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:28,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:28,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:28,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (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 [2019-10-14 23:52:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:28,562 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:28,562 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:52:28,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:28 BoogieIcfgContainer [2019-10-14 23:52:28,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:28,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:28,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:28,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:28,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:27" (1/3) ... [2019-10-14 23:52:28,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7155ba8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:28, skipping insertion in model container [2019-10-14 23:52:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:28" (2/3) ... [2019-10-14 23:52:28,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7155ba8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:28, skipping insertion in model container [2019-10-14 23:52:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:28" (3/3) ... [2019-10-14 23:52:28,573 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_03.i [2019-10-14 23:52:28,584 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:28,593 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:28,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:28,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:28,651 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:28,652 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:28,652 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:28,652 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:28,652 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:28,652 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:28,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-14 23:52:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:28,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:28,696 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:28,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2019-10-14 23:52:28,723 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:28,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919672869] [2019-10-14 23:52:28,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:28,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919672869] [2019-10-14 23:52:28,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:28,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:28,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90058367] [2019-10-14 23:52:28,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:28,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:28,898 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-14 23:52:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,920 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-10-14 23:52:28,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:28,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-14 23:52:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,930 INFO L225 Difference]: With dead ends: 41 [2019-10-14 23:52:28,930 INFO L226 Difference]: Without dead ends: 19 [2019-10-14 23:52:28,934 INFO L600 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 [2019-10-14 23:52:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-14 23:52:28,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-14 23:52:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-14 23:52:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-14 23:52:28,976 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-10-14 23:52:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,977 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-14 23:52:28,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-14 23:52:28,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:28,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:28,978 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:28,979 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:28,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,979 INFO L82 PathProgramCache]: Analyzing trace with hash 905206694, now seen corresponding path program 1 times [2019-10-14 23:52:28,980 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:28,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472984834] [2019-10-14 23:52:28,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:29,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472984834] [2019-10-14 23:52:29,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:29,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:29,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409257502] [2019-10-14 23:52:29,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:29,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:29,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:29,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:29,056 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-14 23:52:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:29,096 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-14 23:52:29,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:29,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-14 23:52:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:29,098 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:52:29,098 INFO L226 Difference]: Without dead ends: 20 [2019-10-14 23:52:29,100 INFO L600 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 [2019-10-14 23:52:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-14 23:52:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-14 23:52:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:52:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-14 23:52:29,106 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-10-14 23:52:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:29,107 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-14 23:52:29,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-14 23:52:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:52:29,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:29,108 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:29,109 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash -764882998, now seen corresponding path program 1 times [2019-10-14 23:52:29,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:29,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561745663] [2019-10-14 23:52:29,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:29,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:29,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:29,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561745663] [2019-10-14 23:52:29,163 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:29,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:29,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359984032] [2019-10-14 23:52:29,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:29,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:29,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:29,168 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-10-14 23:52:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:29,220 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-14 23:52:29,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:29,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-14 23:52:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:29,225 INFO L225 Difference]: With dead ends: 34 [2019-10-14 23:52:29,225 INFO L226 Difference]: Without dead ends: 24 [2019-10-14 23:52:29,226 INFO L600 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 [2019-10-14 23:52:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-14 23:52:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-10-14 23:52:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-14 23:52:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-14 23:52:29,246 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-10-14 23:52:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:29,246 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-14 23:52:29,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-14 23:52:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:52:29,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:29,249 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:29,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:29,250 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2019-10-14 23:52:29,250 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:29,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894991304] [2019-10-14 23:52:29,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:29,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:29,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:29,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894991304] [2019-10-14 23:52:29,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646726263] [2019-10-14 23:52:29,323 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 [2019-10-14 23:52:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:29,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:29,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:29,433 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:29,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1861431008] [2019-10-14 23:52:29,498 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-10-14 23:52:29,540 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:29,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:29,609 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:29,611 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. [2019-10-14 23:52:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:29,614 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:29,651 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:29,652 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:29,653 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-10-14 23:52:29,654 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:29,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:29,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-10-14 23:52:29,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869871809] [2019-10-14 23:52:29,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:29,656 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:29,656 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:29,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:29,657 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-10-14 23:52:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:29,659 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-10-14 23:52:29,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:29,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-14 23:52:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:29,660 INFO L225 Difference]: With dead ends: 21 [2019-10-14 23:52:29,660 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:29,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:29,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-14 23:52:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:29,662 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:29,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:29,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:29,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:29,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:29,916 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:29,917 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:29,917 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:29,917 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:29,917 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:29,917 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:29,917 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:29,918 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 31) no Hoare annotation was computed. [2019-10-14 23:52:29,918 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 31) no Hoare annotation was computed. [2019-10-14 23:52:29,918 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 31) the Hoare annotation is: true [2019-10-14 23:52:29,918 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: false [2019-10-14 23:52:29,918 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-10-14 23:52:29,918 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: false [2019-10-14 23:52:29,919 INFO L443 ceAbstractionStarter]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2019-10-14 23:52:29,919 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 21) the Hoare annotation is: false [2019-10-14 23:52:29,919 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2019-10-14 23:52:29,919 INFO L439 ceAbstractionStarter]: At program point L10-2(lines 10 14) the Hoare annotation is: false [2019-10-14 23:52:29,919 INFO L443 ceAbstractionStarter]: For program point L10-3(lines 10 14) no Hoare annotation was computed. [2019-10-14 23:52:29,919 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:29,920 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:29,920 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:29,920 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:29,921 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:29,921 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:29,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:29 BoogieIcfgContainer [2019-10-14 23:52:29,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:29,937 INFO L168 Benchmark]: Toolchain (without parser) took 2221.98 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 101.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,940 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.97 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,943 INFO L168 Benchmark]: Boogie Preprocessor took 166.49 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 179.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,949 INFO L168 Benchmark]: RCFGBuilder took 303.65 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 165.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,950 INFO L168 Benchmark]: TraceAbstraction took 1367.17 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 101.2 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,964 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.97 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.49 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 179.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 303.65 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 165.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1367.17 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 101.2 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: 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, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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]: 122, 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...