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/loop-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:26,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:26,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:26,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:26,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:26,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:26,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:26,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:26,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:26,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:26,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:26,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:26,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:26,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:26,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:26,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:26,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:26,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:26,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:26,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:26,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:26,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:26,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:26,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:26,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:05:26,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:05:26,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:05:26,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:05:26,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:05:26,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:05:26,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:05:26,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:05:26,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:05:26,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:05:26,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:05:26,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:05:26,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:05:26,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:05:26,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:26,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:26,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:26,434 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 [2019-10-13 21:05:26,469 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:26,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:26,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:26,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:26,471 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:26,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:26,472 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:26,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:26,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:26,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:26,476 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:26,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:26,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:26,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:26,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:26,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:26,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:26,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:26,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:26,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:26,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:26,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:26,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:26,480 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 [2019-10-13 21:05:26,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:26,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:26,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:26,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:26,778 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:26,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2019-10-13 21:05:26,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593b4f16a/81dfcf9e468f4404bd5d94aa41ecd22e/FLAG604446e24 [2019-10-13 21:05:27,335 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:27,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2019-10-13 21:05:27,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593b4f16a/81dfcf9e468f4404bd5d94aa41ecd22e/FLAG604446e24 [2019-10-13 21:05:27,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593b4f16a/81dfcf9e468f4404bd5d94aa41ecd22e [2019-10-13 21:05:27,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:27,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:27,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:27,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:27,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:27,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:27,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db268e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27, skipping insertion in model container [2019-10-13 21:05:27,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:27,737 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:27,754 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:05:27,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:27,938 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:05:27,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:27,973 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:05:27,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27 WrapperNode [2019-10-13 21:05:27,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:27,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:05:27,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:05:27,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:05:28,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (1/1) ... [2019-10-13 21:05:28,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:05:28,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:05:28,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:05:28,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:05:28,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (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 [2019-10-13 21:05:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:05:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:05:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:05:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:05:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:05:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:05:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:05:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:05:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:05:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:05:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:05:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:05:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:05:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:05:28,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:05:28,378 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:05:28,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:28 BoogieIcfgContainer [2019-10-13 21:05:28,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:05:28,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:05:28,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:05:28,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:05:28,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:27" (1/3) ... [2019-10-13 21:05:28,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cc816e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:28, skipping insertion in model container [2019-10-13 21:05:28,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:27" (2/3) ... [2019-10-13 21:05:28,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cc816e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:28, skipping insertion in model container [2019-10-13 21:05:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:28" (3/3) ... [2019-10-13 21:05:28,397 INFO L109 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2019-10-13 21:05:28,414 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:05:28,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:05:28,453 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:05:28,487 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:05:28,487 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:05:28,487 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:05:28,488 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:05:28,488 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:05:28,488 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:05:28,488 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:05:28,488 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:05:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-13 21:05:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:05:28,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:28,517 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:28,519 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1584649929, now seen corresponding path program 1 times [2019-10-13 21:05:28,531 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:28,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472846580] [2019-10-13 21:05:28,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:28,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472846580] [2019-10-13 21:05:28,663 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:28,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:05:28,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027255532] [2019-10-13 21:05:28,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:28,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:28,689 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-13 21:05:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:28,712 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-10-13 21:05:28,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:28,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-13 21:05:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:28,719 INFO L225 Difference]: With dead ends: 42 [2019-10-13 21:05:28,720 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 21:05:28,723 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 [2019-10-13 21:05:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 21:05:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 21:05:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 21:05:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-13 21:05:28,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2019-10-13 21:05:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:28,763 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-13 21:05:28,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-13 21:05:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:05:28,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:28,765 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:28,765 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash -963606854, now seen corresponding path program 1 times [2019-10-13 21:05:28,766 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:28,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997025018] [2019-10-13 21:05:28,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:28,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997025018] [2019-10-13 21:05:28,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:28,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:05:28,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748917529] [2019-10-13 21:05:28,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:05:28,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:05:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:05:28,846 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2019-10-13 21:05:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:28,940 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-10-13 21:05:28,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:05:28,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 21:05:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:28,944 INFO L225 Difference]: With dead ends: 35 [2019-10-13 21:05:28,945 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 21:05:28,946 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 [2019-10-13 21:05:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 21:05:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-10-13 21:05:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:05:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-13 21:05:28,962 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-10-13 21:05:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:28,963 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-13 21:05:28,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:05:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-13 21:05:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:05:28,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:28,964 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:28,965 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:28,966 INFO L82 PathProgramCache]: Analyzing trace with hash -544788776, now seen corresponding path program 1 times [2019-10-13 21:05:28,968 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:28,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059105673] [2019-10-13 21:05:28,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:28,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:29,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059105673] [2019-10-13 21:05:29,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:29,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:05:29,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950696192] [2019-10-13 21:05:29,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:05:29,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:05:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:05:29,151 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2019-10-13 21:05:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:29,245 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-13 21:05:29,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:05:29,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-13 21:05:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:29,248 INFO L225 Difference]: With dead ends: 29 [2019-10-13 21:05:29,249 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:05:29,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:05:29,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:05:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-10-13 21:05:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 21:05:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-13 21:05:29,260 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2019-10-13 21:05:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:29,261 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-13 21:05:29,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:05:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-13 21:05:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:05:29,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:29,264 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:29,265 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:29,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1315898579, now seen corresponding path program 1 times [2019-10-13 21:05:29,266 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:29,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877768064] [2019-10-13 21:05:29,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:29,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:29,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:29,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877768064] [2019-10-13 21:05:29,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904887543] [2019-10-13 21:05:29,377 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 [2019-10-13 21:05:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:29,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:05:29,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:05:29,482 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:05:29,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [667037927] [2019-10-13 21:05:29,540 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-10-13 21:05:29,578 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:05:29,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:05:29,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:05:29,648 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 20 variables. [2019-10-13 21:05:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:29,652 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:05:29,689 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:05:29,689 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:05:29,694 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-10-13 21:05:29,694 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:05:29,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:05:29,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 4, 4] total 9 [2019-10-13 21:05:29,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131436008] [2019-10-13 21:05:29,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:29,698 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:29,698 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:05:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:29,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:29,699 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 2 states. [2019-10-13 21:05:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:29,701 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-10-13 21:05:29,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:29,702 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-13 21:05:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:29,702 INFO L225 Difference]: With dead ends: 22 [2019-10-13 21:05:29,702 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:05:29,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:05:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:05:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:05:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:05:29,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-13 21:05:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:29,705 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:05:29,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:05:29,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:05:29,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:29,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:05:29,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:29,950 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:29,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:29,951 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:29,951 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:05:29,951 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:29,951 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:29,951 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2019-10-13 21:05:29,951 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-13 21:05:29,952 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-10-13 21:05:29,952 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2019-10-13 21:05:29,952 INFO L443 ceAbstractionStarter]: For program point L15-3(lines 15 16) no Hoare annotation was computed. [2019-10-13 21:05:29,952 INFO L443 ceAbstractionStarter]: For program point L15-5(lines 15 16) no Hoare annotation was computed. [2019-10-13 21:05:29,952 INFO L439 ceAbstractionStarter]: At program point L15-6(lines 15 16) the Hoare annotation is: false [2019-10-13 21:05:29,952 INFO L439 ceAbstractionStarter]: At program point L15-7(lines 15 16) the Hoare annotation is: (= main_~i~0 0) [2019-10-13 21:05:29,952 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2019-10-13 21:05:29,953 INFO L439 ceAbstractionStarter]: At program point L12-3(lines 12 14) the Hoare annotation is: false [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point L12-4(lines 12 14) no Hoare annotation was computed. [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2019-10-13 21:05:29,953 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2019-10-13 21:05:29,953 INFO L443 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-10-13 21:05:29,954 INFO L443 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2019-10-13 21:05:29,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:05:29 BoogieIcfgContainer [2019-10-13 21:05:29,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:05:29,966 INFO L168 Benchmark]: Toolchain (without parser) took 2244.93 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 95.0 MB in the end (delta: 7.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:29,967 INFO L168 Benchmark]: CDTParser took 1.38 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. [2019-10-13 21:05:29,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.32 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:29,969 INFO L168 Benchmark]: Boogie Preprocessor took 112.10 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:29,970 INFO L168 Benchmark]: RCFGBuilder took 292.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 167.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:29,971 INFO L168 Benchmark]: TraceAbstraction took 1575.21 ms. Allocated memory is still 202.9 MB. Free memory was 166.4 MB in the beginning and 95.0 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:29,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 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 253.32 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.10 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 292.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 167.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1575.21 ms. Allocated memory is still 202.9 MB. Free memory was 166.4 MB in the beginning and 95.0 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 10 SDslu, 49 SDs, 0 SdLazy, 38 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 10 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 2728 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 8/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 113, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9625, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8, AVG_WEAKENED_CONJUNCTS: 0.3, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...