/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:17:48,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:17:48,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:17:49,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 01:17:49,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:17:49,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:17:49,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:17:49,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:17:49,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:17:49,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:17:49,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:17:49,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:17:49,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:17:49,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:17:49,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:17:49,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:17:49,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:17:49,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:17:49,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:17:49,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:17:49,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:17:49,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:17:49,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:17:49,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:17:49,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:17:49,067 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:17:49,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:17:49,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:17:49,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:17:49,069 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:17:49,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:17:49,069 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:17:49,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:17:49,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:17:49,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:17:49,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:17:49,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:17:49,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:17:49,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:17:49,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:17:49,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:17:49,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:17:49,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:17:49,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:17:49,072 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 [2019-11-07 01:17:49,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:17:49,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:17:49,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:17:49,372 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:17:49,373 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:17:49,373 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-07 01:17:49,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bd8e12/a5896e61e09d42e4b391866a71af01ff/FLAG35094b9fb [2019-11-07 01:17:49,907 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:17:49,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-07 01:17:49,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bd8e12/a5896e61e09d42e4b391866a71af01ff/FLAG35094b9fb [2019-11-07 01:17:50,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bd8e12/a5896e61e09d42e4b391866a71af01ff [2019-11-07 01:17:50,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:17:50,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:17:50,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:17:50,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:17:50,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:17:50,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20db1caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50, skipping insertion in model container [2019-11-07 01:17:50,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,336 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:17:50,355 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:17:50,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:17:50,586 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:17:50,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:17:50,621 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:17:50,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50 WrapperNode [2019-11-07 01:17:50,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:17:50,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:17:50,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:17:50,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:17:50,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... [2019-11-07 01:17:50,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:17:50,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:17:50,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:17:50,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:17:50,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:17:50,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:17:50,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:17:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2019-11-07 01:17:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:17:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:17:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:17:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2019-11-07 01:17:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:17:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:17:51,230 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:17:51,231 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:17:51,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:51 BoogieIcfgContainer [2019-11-07 01:17:51,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:17:51,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:17:51,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:17:51,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:17:51,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:50" (1/3) ... [2019-11-07 01:17:51,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b41cacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:51, skipping insertion in model container [2019-11-07 01:17:51,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:50" (2/3) ... [2019-11-07 01:17:51,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b41cacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:51, skipping insertion in model container [2019-11-07 01:17:51,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:51" (3/3) ... [2019-11-07 01:17:51,241 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2019-11-07 01:17:51,250 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:17:51,258 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:17:51,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:17:51,294 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:17:51,294 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:17:51,294 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:17:51,294 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:17:51,294 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:17:51,295 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:17:51,295 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:17:51,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:17:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-07 01:17:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 01:17:51,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:17:51,319 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:17:51,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:17:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:17:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1426255065, now seen corresponding path program 1 times [2019-11-07 01:17:51,336 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:17:51,337 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839277317] [2019-11-07 01:17:51,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:17:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:17:51,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839277317] [2019-11-07 01:17:51,582 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:17:51,582 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:17:51,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819838308] [2019-11-07 01:17:51,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:17:51,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:17:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:17:51,603 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2019-11-07 01:17:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:17:51,668 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-07 01:17:51,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:17:51,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-07 01:17:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:17:51,682 INFO L225 Difference]: With dead ends: 44 [2019-11-07 01:17:51,682 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 01:17:51,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:17:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 01:17:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 01:17:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 01:17:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-07 01:17:51,728 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-11-07 01:17:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:17:51,729 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-07 01:17:51,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:17:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-07 01:17:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 01:17:51,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:17:51,731 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:17:51,732 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:17:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:17:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1318016053, now seen corresponding path program 1 times [2019-11-07 01:17:51,733 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:17:51,733 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816457288] [2019-11-07 01:17:51,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:17:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 01:17:51,860 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816457288] [2019-11-07 01:17:51,860 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894828855] [2019-11-07 01:17:51,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:17:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:51,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:17:51,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:17:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:17:52,029 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:17:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:17:52,081 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945713289] [2019-11-07 01:17:52,110 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 01:17:52,110 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:17:52,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:17:52,126 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:17:52,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:17:52,279 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 01:17:52,694 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-11-07 01:17:52,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-11-07 01:17:52,700 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:53,469 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 01:17:53,469 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 4, 4] total 24 [2019-11-07 01:17:53,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924774449] [2019-11-07 01:17:53,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 01:17:53,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:53,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 01:17:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2019-11-07 01:17:53,481 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-11-07 01:17:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:17:53,862 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-11-07 01:17:53,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 01:17:53,863 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2019-11-07 01:17:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:17:53,866 INFO L225 Difference]: With dead ends: 44 [2019-11-07 01:17:53,866 INFO L226 Difference]: Without dead ends: 33 [2019-11-07 01:17:53,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2019-11-07 01:17:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-07 01:17:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-07 01:17:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-07 01:17:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-07 01:17:53,879 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 26 [2019-11-07 01:17:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:17:53,879 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-07 01:17:53,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 01:17:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-07 01:17:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 01:17:53,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:17:53,882 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:17:54,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:17:54,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:17:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:17:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1395603433, now seen corresponding path program 1 times [2019-11-07 01:17:54,089 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:17:54,090 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290232115] [2019-11-07 01:17:54,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:17:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:17:54,187 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290232115] [2019-11-07 01:17:54,188 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695208483] [2019-11-07 01:17:54,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 01:17:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:54,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:17:54,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:17:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 01:17:54,286 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:17:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 01:17:54,336 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1070071871] [2019-11-07 01:17:54,339 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 01:17:54,339 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:17:54,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:17:54,340 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:17:54,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:17:54,385 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-11-07 01:17:54,840 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-11-07 01:17:54,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-11-07 01:17:54,876 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:55,720 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:17:55,720 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4, 16] total 24 [2019-11-07 01:17:55,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224843182] [2019-11-07 01:17:55,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 01:17:55,722 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 01:17:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2019-11-07 01:17:55,723 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 24 states. [2019-11-07 01:17:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:17:56,581 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2019-11-07 01:17:56,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 01:17:56,581 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 27 [2019-11-07 01:17:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:17:56,582 INFO L225 Difference]: With dead ends: 43 [2019-11-07 01:17:56,582 INFO L226 Difference]: Without dead ends: 23 [2019-11-07 01:17:56,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 01:17:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-07 01:17:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-07 01:17:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-07 01:17:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-07 01:17:56,589 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2019-11-07 01:17:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:17:56,590 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-07 01:17:56,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-07 01:17:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-07 01:17:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 01:17:56,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:17:56,591 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:17:56,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:17:56,802 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:17:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:17:56,802 INFO L82 PathProgramCache]: Analyzing trace with hash 108787747, now seen corresponding path program 2 times [2019-11-07 01:17:56,803 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:17:56,803 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097405485] [2019-11-07 01:17:56,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:17:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 01:17:56,886 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097405485] [2019-11-07 01:17:56,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:17:56,887 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 01:17:56,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515084367] [2019-11-07 01:17:56,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:17:56,887 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:56,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:17:56,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:17:56,888 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2019-11-07 01:17:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:17:56,928 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-07 01:17:56,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:17:56,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-07 01:17:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:17:56,930 INFO L225 Difference]: With dead ends: 33 [2019-11-07 01:17:56,930 INFO L226 Difference]: Without dead ends: 24 [2019-11-07 01:17:56,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:17:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-07 01:17:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-07 01:17:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-07 01:17:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-07 01:17:56,941 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2019-11-07 01:17:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:17:56,941 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-07 01:17:56,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:17:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-07 01:17:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-07 01:17:56,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:17:56,944 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:17:56,945 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:17:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:17:56,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1067802980, now seen corresponding path program 1 times [2019-11-07 01:17:56,946 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:17:56,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298392750] [2019-11-07 01:17:56,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:17:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 01:17:57,091 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298392750] [2019-11-07 01:17:57,091 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854167122] [2019-11-07 01:17:57,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:17:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:17:57,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:17:57,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:17:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 01:17:57,217 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:17:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 01:17:57,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [906692360] [2019-11-07 01:17:57,284 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 01:17:57,284 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:17:57,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:17:57,285 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:17:57,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:17:57,309 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-11-07 01:17:57,596 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-11-07 01:17:57,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-11-07 01:17:57,620 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 01:17:58,403 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 01:17:58,403 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 16] total 25 [2019-11-07 01:17:58,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486813822] [2019-11-07 01:17:58,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-07 01:17:58,405 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:17:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-07 01:17:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2019-11-07 01:17:58,406 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 25 states. [2019-11-07 01:18:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:18:01,302 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2019-11-07 01:18:01,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 01:18:01,302 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2019-11-07 01:18:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:18:01,303 INFO L225 Difference]: With dead ends: 39 [2019-11-07 01:18:01,303 INFO L226 Difference]: Without dead ends: 25 [2019-11-07 01:18:01,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=1289, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 01:18:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-07 01:18:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-07 01:18:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-07 01:18:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-07 01:18:01,311 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2019-11-07 01:18:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:18:01,311 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-07 01:18:01,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-07 01:18:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-07 01:18:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-07 01:18:01,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:18:01,313 INFO L410 BasicCegarLoop]: trace histogram [6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:18:01,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:18:01,517 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:18:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:18:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1271027170, now seen corresponding path program 2 times [2019-11-07 01:18:01,518 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:18:01,518 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697084199] [2019-11-07 01:18:01,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:18:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:18:02,749 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-11-07 01:18:02,966 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-11-07 01:18:03,216 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2019-11-07 01:18:03,550 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-11-07 01:18:03,848 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-11-07 01:18:04,080 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2019-11-07 01:18:04,313 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-11-07 01:18:04,573 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-11-07 01:18:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:18:04,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697084199] [2019-11-07 01:18:04,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96456836] [2019-11-07 01:18:04,797 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:18:05,061 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-07 01:18:05,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 01:18:05,065 WARN L254 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 95 conjunts are in the unsatisfiable core [2019-11-07 01:18:05,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:18:06,206 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2019-11-07 01:18:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 01:18:07,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:18:22,616 WARN L191 SmtUtils]: Spent 13.33 s on a formula simplification. DAG size of input: 131 DAG size of output: 65 [2019-11-07 01:18:22,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 01:18:26,314 WARN L191 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 91 DAG size of output: 75