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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:46:49,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:46:49,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:46:49,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:46:49,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:46:49,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:46:49,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:46:49,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:46:49,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:46:49,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:46:49,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:46:49,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:46:49,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:46:49,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:46:49,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:46:49,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:46:49,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:46:49,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:46:49,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:46:49,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:46:49,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:46:49,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:46:49,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:46:49,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:46:49,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:46:49,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:46:49,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:46:49,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:46:49,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:46:49,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:46:49,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:46:49,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:46:49,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:46:49,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:46:49,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:46:49,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:46:49,686 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 [2019-10-07 13:46:49,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:46:49,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:46:49,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:46:49,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:46:49,707 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:46:49,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:46:49,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:46:49,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:46:49,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:46:49,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:46:49,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:46:49,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:46:49,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:46:49,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:46:49,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:46:49,710 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:46:49,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:46:49,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:46:49,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:46:49,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:46:49,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:46:49,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:49,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:46:49,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:46:49,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:46:49,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:46:49,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:46:49,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:46:49,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:46:50,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:46:50,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:46:50,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:46:50,037 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:46:50,038 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:46:50,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2019-10-07 13:46:50,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/964896555/d26e2a3c9e324ff5a8a95b3c6306f5ee/FLAG0324d9d67 [2019-10-07 13:46:50,486 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:46:50,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2019-10-07 13:46:50,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/964896555/d26e2a3c9e324ff5a8a95b3c6306f5ee/FLAG0324d9d67 [2019-10-07 13:46:50,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/964896555/d26e2a3c9e324ff5a8a95b3c6306f5ee [2019-10-07 13:46:50,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:46:50,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:46:50,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:50,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:46:50,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:46:50,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:50" (1/1) ... [2019-10-07 13:46:50,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f9260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:50, skipping insertion in model container [2019-10-07 13:46:50,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:50" (1/1) ... [2019-10-07 13:46:50,937 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:46:50,953 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:46:51,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:51,174 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:46:51,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:51,209 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:46:51,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51 WrapperNode [2019-10-07 13:46:51,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:51,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:46:51,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:46:51,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:46:51,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... [2019-10-07 13:46:51,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:46:51,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:46:51,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:46:51,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:46:51,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:46:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:46:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:46:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:46:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:46:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:46:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:46:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:46:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:46:51,598 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:46:51,598 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:46:51,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:51 BoogieIcfgContainer [2019-10-07 13:46:51,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:46:51,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:46:51,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:46:51,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:46:51,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:46:50" (1/3) ... [2019-10-07 13:46:51,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f84ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:51, skipping insertion in model container [2019-10-07 13:46:51,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:51" (2/3) ... [2019-10-07 13:46:51,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f84ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:51, skipping insertion in model container [2019-10-07 13:46:51,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:51" (3/3) ... [2019-10-07 13:46:51,611 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-10-07 13:46:51,621 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:46:51,627 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:46:51,637 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:46:51,661 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:46:51,661 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:46:51,661 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:46:51,661 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:46:51,661 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:46:51,661 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:46:51,662 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:46:51,662 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:46:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 13:46:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:46:51,684 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:51,685 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:51,686 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash -699336870, now seen corresponding path program 1 times [2019-10-07 13:46:51,701 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:51,701 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:51,701 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:51,701 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:51,821 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:51,821 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:46:51,822 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:46:51,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:46:51,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:46:51,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:46:51,868 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-07 13:46:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:51,904 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-07 13:46:51,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:46:51,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-07 13:46:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:51,914 INFO L225 Difference]: With dead ends: 29 [2019-10-07 13:46:51,915 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:46:51,919 INFO L606 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 [2019-10-07 13:46:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:46:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:46:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:46:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:46:51,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:46:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:51,959 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:46:51,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:46:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:46:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:46:51,960 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:51,960 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:51,961 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:51,961 INFO L82 PathProgramCache]: Analyzing trace with hash -228174086, now seen corresponding path program 1 times [2019-10-07 13:46:51,961 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:51,962 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:51,962 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:51,962 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:52,003 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:52,003 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:52,004 INFO L95 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 [2019-10-07 13:46:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:52,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:46:52,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:52,078 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:52,130 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:52,150 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:46:52,150 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:52,156 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:52,164 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:52,164 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:52,219 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:46:52,470 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:52,502 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:46:52,506 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:52,506 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:52,507 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:46:52,507 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:46:52,507 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 109#true [2019-10-07 13:46:52,508 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:52,508 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 104#true [2019-10-07 13:46:52,508 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 95#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:52,509 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 85#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-07 13:46:52,509 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 90#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:52,509 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 100#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:52,510 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 80#(and (<= 1 main_~i~0) (not (<= main_~i~0 8)) (<= 8 main_~i~0) (<= 0 main_~sn~0)) [2019-10-07 13:46:52,510 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 75#(and (<= 1 main_~i~0) (<= 0 main_~sn~0)) [2019-10-07 13:46:52,620 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:52,621 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 6] total 10 [2019-10-07 13:46:52,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 13:46:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 13:46:52,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:46:52,624 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2019-10-07 13:46:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:52,759 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-07 13:46:52,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:46:52,760 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-10-07 13:46:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:52,761 INFO L225 Difference]: With dead ends: 20 [2019-10-07 13:46:52,761 INFO L226 Difference]: Without dead ends: 15 [2019-10-07 13:46:52,762 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:46:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-07 13:46:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-07 13:46:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-07 13:46:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-07 13:46:52,768 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-07 13:46:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:52,768 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-07 13:46:52,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 13:46:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-07 13:46:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:46:52,769 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:52,770 INFO L385 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:52,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:52,971 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash -528752806, now seen corresponding path program 2 times [2019-10-07 13:46:52,973 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:52,973 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:52,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:52,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:53,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:53,057 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:53,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:53,089 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 13:46:53,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:46:53,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 13:46:53,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:53,107 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:53,174 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:46:53,175 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-07 13:46:53,176 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:46:53,176 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:46:53,177 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:46:53,177 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:46:53,199 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:46:53,294 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:46:53,324 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:46:53,326 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:46:53,327 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:46:53,327 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:46:53,328 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:46:53,328 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 106#true [2019-10-07 13:46:53,328 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:46:53,328 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 101#true [2019-10-07 13:46:53,329 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 92#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:53,329 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 82#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:46:53,330 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 87#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:46:53,330 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 97#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:46:53,331 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 77#(and (<= 1 main_~i~0) (not (<= main_~i~0 8)) (<= 8 main_~i~0) (<= 0 main_~sn~0)) [2019-10-07 13:46:53,331 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 72#(and (<= 1 main_~i~0) (<= 0 main_~sn~0)) [2019-10-07 13:46:53,464 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:46:53,464 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 6] total 15 [2019-10-07 13:46:53,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 13:46:53,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 13:46:53,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:46:53,466 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2019-10-07 13:46:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:53,618 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-07 13:46:53,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 13:46:53,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2019-10-07 13:46:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:53,619 INFO L225 Difference]: With dead ends: 24 [2019-10-07 13:46:53,620 INFO L226 Difference]: Without dead ends: 19 [2019-10-07 13:46:53,621 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2019-10-07 13:46:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-07 13:46:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-07 13:46:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 13:46:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-07 13:46:53,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2019-10-07 13:46:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:53,629 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-07 13:46:53,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 13:46:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-07 13:46:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 13:46:53,630 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:53,630 INFO L385 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:53,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:53,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:53,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1963800742, now seen corresponding path program 3 times [2019-10-07 13:46:53,833 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:53,833 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:53,833 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:53,833 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:46:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:46:53,899 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 13:46:53,899 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 13:46:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:46:53 BoogieIcfgContainer [2019-10-07 13:46:53,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:46:53,922 INFO L168 Benchmark]: Toolchain (without parser) took 3001.39 ms. Allocated memory was 144.2 MB in the beginning and 232.8 MB in the end (delta: 88.6 MB). Free memory was 102.0 MB in the beginning and 120.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,923 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.09 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,926 INFO L168 Benchmark]: Boogie Preprocessor took 120.22 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,926 INFO L168 Benchmark]: RCFGBuilder took 267.93 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,927 INFO L168 Benchmark]: TraceAbstraction took 2319.10 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 120.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:53,931 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.09 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.22 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.93 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2319.10 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 120.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, sn=0; [L13] i=1 VAL [i=1, sn=0] [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ VAL [i=2, sn=2] [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ VAL [i=3, sn=4] [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ VAL [i=4, sn=6] [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ VAL [i=5, sn=6] [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ VAL [i=6, sn=6] [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ VAL [i=7, sn=6] [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ VAL [i=8, sn=6] [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ VAL [i=9, sn=6] [L13] COND FALSE !(i<=8) VAL [i=9, sn=6] [L17] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 8, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 15 SDslu, 59 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1416 SizeOfPredicates, 2 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 517, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 42, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME[ms]: 35, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME[ms]: 13, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 38, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 48, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME[ms]: 288, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 64, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 24, DOMAIN_ISBOTTOM_APPLICATIONS: 2, DOMAIN_ISBOTTOM_TIME[ms]: 3, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 262, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 261, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 10, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 10, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 19, DAG_COMPRESSION_PROCESSED_NODES: 114, DAG_COMPRESSION_RETAINED_NODES: 82, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...