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 0.1.24-13a467a-m [2019-10-15 01:30:20,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:30:20,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:30:20,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:30:20,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:30:20,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:30:20,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:30:20,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:30:20,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:30:20,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:30:20,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:30:20,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:30:20,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:30:20,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:30:20,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:30:20,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:30:20,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:30:20,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:30:20,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:30:20,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:30:20,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:30:20,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:30:20,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:30:20,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:30:20,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:30:20,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:30:20,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:30:20,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:30:20,706 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 [2019-10-15 01:30:20,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:30:20,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:30:20,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:30:20,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:30:20,729 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:30:20,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:30:20,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:30:20,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:30:20,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:30:20,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:30:20,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:30:20,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:30:20,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:30:20,732 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:30:20,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:30:20,732 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:30:20,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:30:20,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:30:20,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:30:20,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:30:20,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:30:20,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:30:20,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:30:20,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:30:20,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:30:20,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:30:20,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:30:20,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:30:20,739 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 [2019-10-15 01:30:21,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:30:21,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:30:21,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:30:21,034 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:30:21,034 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:30:21,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2019-10-15 01:30:21,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3561b768e/a1287f1ff90d453a907efa484075db82/FLAG6dae072b6 [2019-10-15 01:30:21,608 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:30:21,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i [2019-10-15 01:30:21,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3561b768e/a1287f1ff90d453a907efa484075db82/FLAG6dae072b6 [2019-10-15 01:30:21,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3561b768e/a1287f1ff90d453a907efa484075db82 [2019-10-15 01:30:21,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:30:21,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:30:21,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:30:21,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:30:21,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:30:21,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:30:21" (1/1) ... [2019-10-15 01:30:21,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43527fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:21, skipping insertion in model container [2019-10-15 01:30:21,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:30:21" (1/1) ... [2019-10-15 01:30:21,985 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:30:22,005 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:30:22,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:30:22,220 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:30:22,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:30:22,260 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:30:22,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22 WrapperNode [2019-10-15 01:30:22,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:30:22,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:30:22,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:30:22,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:30:22,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (1/1) ... [2019-10-15 01:30:22,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:30:22,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:30:22,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:30:22,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:30:22,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (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 [2019-10-15 01:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:30:22,452 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2019-10-15 01:30:22,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:30:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:30:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:30:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2019-10-15 01:30:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:30:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:30:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:30:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:30:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:30:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:30:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:30:22,883 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:30:22,883 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:30:22,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:30:22 BoogieIcfgContainer [2019-10-15 01:30:22,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:30:22,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:30:22,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:30:22,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:30:22,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:30:21" (1/3) ... [2019-10-15 01:30:22,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb911f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:30:22, skipping insertion in model container [2019-10-15 01:30:22,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:30:22" (2/3) ... [2019-10-15 01:30:22,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb911f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:30:22, skipping insertion in model container [2019-10-15 01:30:22,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:30:22" (3/3) ... [2019-10-15 01:30:22,891 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2019-10-15 01:30:22,900 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:30:22,908 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:30:22,918 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:30:22,948 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:30:22,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:30:22,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:30:22,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:30:22,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:30:22,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:30:22,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:30:22,950 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:30:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-15 01:30:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 01:30:22,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:22,972 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:30:22,974 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1426255065, now seen corresponding path program 1 times [2019-10-15 01:30:22,988 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:22,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998262776] [2019-10-15 01:30:22,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:22,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:22,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:30:23,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998262776] [2019-10-15 01:30:23,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:30:23,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:30:23,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134278379] [2019-10-15 01:30:23,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:30:23,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:30:23,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:30:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:30:23,223 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2019-10-15 01:30:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:30:23,297 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-15 01:30:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:30:23,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-15 01:30:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:30:23,308 INFO L225 Difference]: With dead ends: 44 [2019-10-15 01:30:23,308 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 01:30:23,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:30:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 01:30:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 01:30:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 01:30:23,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-15 01:30:23,351 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-15 01:30:23,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:30:23,351 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-15 01:30:23,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:30:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-15 01:30:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 01:30:23,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:23,354 INFO L380 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] [2019-10-15 01:30:23,354 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1318016053, now seen corresponding path program 1 times [2019-10-15 01:30:23,355 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:23,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043575647] [2019-10-15 01:30:23,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:23,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:23,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:30:23,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043575647] [2019-10-15 01:30:23,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653740419] [2019-10-15 01:30:23,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:30:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:23,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:30:23,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:30:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:30:23,636 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:30:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:30:23,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091925029] [2019-10-15 01:30:23,760 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-15 01:30:23,761 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:30:23,770 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:30:23,779 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:30:23,780 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:30:24,046 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:30:25,581 INFO L199 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-10-15 01:30:25,590 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-15 01:30:25,596 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:30:26,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:30:26,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 4, 4] total 24 [2019-10-15 01:30:26,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390551566] [2019-10-15 01:30:26,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:30:26,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:30:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:30:26,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:30:26,474 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 17 states. [2019-10-15 01:30:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:30:26,873 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-10-15 01:30:26,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:30:26,874 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2019-10-15 01:30:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:30:26,878 INFO L225 Difference]: With dead ends: 44 [2019-10-15 01:30:26,878 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 01:30:26,880 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:30:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 01:30:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-10-15 01:30:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:30:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-10-15 01:30:26,905 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 26 [2019-10-15 01:30:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:30:26,910 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-10-15 01:30:26,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:30:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-10-15 01:30:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:30:26,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:26,913 INFO L380 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] [2019-10-15 01:30:27,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:30:27,120 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1395603433, now seen corresponding path program 1 times [2019-10-15 01:30:27,121 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:27,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011360164] [2019-10-15 01:30:27,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:27,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:27,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:30:27,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011360164] [2019-10-15 01:30:27,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202904194] [2019-10-15 01:30:27,196 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 [2019-10-15 01:30:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:27,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:30:27,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:30:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:30:27,311 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:30:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:30:27,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391398499] [2019-10-15 01:30:27,340 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-15 01:30:27,341 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:30:27,341 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:30:27,341 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:30:27,342 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:30:27,373 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-15 01:30:28,922 INFO L199 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-10-15 01:30:28,953 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-15 01:30:28,957 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:30:29,493 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:30:29,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4, 12] total 20 [2019-10-15 01:30:29,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25137860] [2019-10-15 01:30:29,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 01:30:29,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:30:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 01:30:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:30:29,496 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 21 states. [2019-10-15 01:30:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:30:30,163 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2019-10-15 01:30:30,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 01:30:30,163 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2019-10-15 01:30:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:30:30,165 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:30:30,165 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:30:30,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:30:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:30:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 01:30:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:30:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 01:30:30,172 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2019-10-15 01:30:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:30:30,172 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 01:30:30,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 01:30:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 01:30:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:30:30,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:30,173 INFO L380 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] [2019-10-15 01:30:30,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:30:30,377 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 108787747, now seen corresponding path program 2 times [2019-10-15 01:30:30,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:30,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114299393] [2019-10-15 01:30:30,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:30,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:30,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:30:30,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114299393] [2019-10-15 01:30:30,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:30:30,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:30:30,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117592475] [2019-10-15 01:30:30,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:30:30,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:30:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:30:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:30:30,501 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2019-10-15 01:30:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:30:30,538 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-15 01:30:30,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:30:30,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-15 01:30:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:30:30,540 INFO L225 Difference]: With dead ends: 33 [2019-10-15 01:30:30,541 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 01:30:30,541 INFO L600 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 [2019-10-15 01:30:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 01:30:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-15 01:30:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-15 01:30:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-15 01:30:30,552 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2019-10-15 01:30:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:30:30,552 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-15 01:30:30,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:30:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-15 01:30:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 01:30:30,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:30,558 INFO L380 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] [2019-10-15 01:30:30,558 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:30,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1067802980, now seen corresponding path program 1 times [2019-10-15 01:30:30,559 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:30,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780445624] [2019-10-15 01:30:30,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:30,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:30,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:30:30,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780445624] [2019-10-15 01:30:30,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601264836] [2019-10-15 01:30:30,705 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 [2019-10-15 01:30:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:30,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:30:30,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:30:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:30:30,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:30:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:30:30,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1803822442] [2019-10-15 01:30:30,934 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-15 01:30:30,934 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:30:30,935 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:30:30,935 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:30:30,935 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:30:30,957 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs [2019-10-15 01:30:32,327 INFO L199 IcfgInterpreter]: Interpreting procedure mapsum with input of size 1 for LOIs [2019-10-15 01:30:32,358 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-15 01:30:32,362 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:30:32,835 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:30:32,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 12] total 21 [2019-10-15 01:30:32,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860808807] [2019-10-15 01:30:32,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-15 01:30:32,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:30:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-15 01:30:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:30:32,837 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 22 states. [2019-10-15 01:30:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:30:33,485 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2019-10-15 01:30:33,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:30:33,485 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 31 [2019-10-15 01:30:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:30:33,486 INFO L225 Difference]: With dead ends: 39 [2019-10-15 01:30:33,486 INFO L226 Difference]: Without dead ends: 25 [2019-10-15 01:30:33,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:30:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-15 01:30:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-15 01:30:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 01:30:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-15 01:30:33,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2019-10-15 01:30:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:30:33,493 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-15 01:30:33,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-15 01:30:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-15 01:30:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-15 01:30:33,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:30:33,494 INFO L380 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] [2019-10-15 01:30:33,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:30:33,698 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:30:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:30:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1271027170, now seen corresponding path program 2 times [2019-10-15 01:30:33,699 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:30:33,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366589352] [2019-10-15 01:30:33,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:33,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:30:33,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:30:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:30:34,798 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-10-15 01:30:34,973 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-15 01:30:35,222 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-10-15 01:30:35,423 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2019-10-15 01:30:35,729 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-10-15 01:30:36,011 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-10-15 01:30:36,243 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2019-10-15 01:30:36,473 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-10-15 01:30:36,719 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-10-15 01:30:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:30:36,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366589352] [2019-10-15 01:30:36,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350866543] [2019-10-15 01:30:36,917 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 [2019-10-15 01:30:37,200 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-15 01:30:37,201 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:30:37,203 WARN L254 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 95 conjunts are in the unsatisfiable core [2019-10-15 01:30:37,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:30:38,677 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-10-15 01:30:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 01:30:39,568 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:30:46,120 WARN L191 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-10-15 01:30:46,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 01:30:48,163 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (let ((.cse30 (+ |c_mapsum_#in~x.offset| 4))) (let ((.cse29 (let ((.cse31 (select |c_#memory_int| |c_mapsum_#in~x.base|))) (store (store .cse31 |c_mapsum_#in~x.offset| (select .cse31 .cse30)) (+ (* c_~N~0 4) |c_mapsum_#in~x.offset| (- 4)) (select .cse31 |c_mapsum_#in~x.offset|))))) (+ (select .cse29 |c_mapsum_#in~x.offset|) (select .cse29 .cse30) 1))) 4294967296))) (let ((.cse0 (< 2147483647 .cse1)) (.cse12 (<= .cse1 2147483647))) (and (or .cse0 (= .cse1 |c_mapsum_#res|) (exists ((v_mapsum_~i~0_81 Int)) (let ((.cse4 (select |c_#memory_int| |c_mapsum_#in~x.base|))) (let ((.cse5 (mod (let ((.cse6 (* v_mapsum_~i~0_81 4))) (+ (* v_mapsum_~i~0_81 2) (select .cse4 (+ .cse6 |c_mapsum_#in~x.offset|)) (select .cse4 (+ .cse6 |c_mapsum_#in~x.offset| 4)) 1)) 4294967296))) (and (<= c_~N~0 (+ v_mapsum_~i~0_81 2)) (not (= (+ (mod (let ((.cse3 (+ |c_mapsum_#in~x.offset| 4))) (let ((.cse2 (store (store .cse4 |c_mapsum_#in~x.offset| (select .cse4 .cse3)) (+ (* c_~N~0 4) |c_mapsum_#in~x.offset| (- 4)) (select .cse4 |c_mapsum_#in~x.offset|)))) (+ (select .cse2 |c_mapsum_#in~x.offset|) (select .cse2 .cse3) 1))) 4294967296) 4294967296) .cse5)) (< (+ v_mapsum_~i~0_81 1) c_~N~0) (< 2147483647 .cse5))))) (exists ((v_prenex_395 Int)) (let ((.cse10 (select |c_#memory_int| |c_mapsum_#in~x.base|))) (let ((.cse7 (mod (let ((.cse11 (* v_prenex_395 4))) (+ (select .cse10 (+ |c_mapsum_#in~x.offset| .cse11 4)) (* v_prenex_395 2) (select .cse10 (+ |c_mapsum_#in~x.offset| .cse11)) 1)) 4294967296))) (and (<= c_~N~0 (+ v_prenex_395 2)) (<= .cse7 2147483647) (< (+ v_prenex_395 1) c_~N~0) (not (= .cse7 (mod (let ((.cse9 (+ |c_mapsum_#in~x.offset| 4))) (let ((.cse8 (store (store .cse10 |c_mapsum_#in~x.offset| (select .cse10 .cse9)) (+ (* c_~N~0 4) |c_mapsum_#in~x.offset| (- 4)) (select .cse10 |c_mapsum_#in~x.offset|)))) (+ (select .cse8 |c_mapsum_#in~x.offset|) (select .cse8 .cse9) 1))) 4294967296)))))))) (or .cse0 .cse12 (forall ((v_main_~ret~1_BEFORE_CALL_64 Int)) (or (exists ((v_prenex_395 Int)) (let ((.cse13 (mod (let ((.cse14 (select |c_#memory_int| |c_mapsum_#in~x.base|)) (.cse15 (* v_prenex_395 4))) (+ (select .cse14 (+ |c_mapsum_#in~x.offset| .cse15 4)) (* v_prenex_395 2) (select .cse14 (+ |c_mapsum_#in~x.offset| .cse15)) 1)) 4294967296))) (and (not (= v_main_~ret~1_BEFORE_CALL_64 .cse13)) (<= c_~N~0 (+ v_prenex_395 2)) (<= .cse13 2147483647) (< (+ v_prenex_395 1) c_~N~0)))) (exists ((v_mapsum_~i~0_81 Int)) (let ((.cse16 (mod (let ((.cse17 (select |c_#memory_int| |c_mapsum_#in~x.base|)) (.cse18 (* v_mapsum_~i~0_81 4))) (+ (* v_mapsum_~i~0_81 2) (select .cse17 (+ .cse18 |c_mapsum_#in~x.offset|)) (select .cse17 (+ .cse18 |c_mapsum_#in~x.offset| 4)) 1)) 4294967296))) (and (not (= .cse16 (+ v_main_~ret~1_BEFORE_CALL_64 4294967296))) (<= c_~N~0 (+ v_mapsum_~i~0_81 2)) (< (+ v_mapsum_~i~0_81 1) c_~N~0) (< 2147483647 .cse16)))) (= v_main_~ret~1_BEFORE_CALL_64 |c_mapsum_#res|)))) (or .cse12 (exists ((v_mapsum_~i~0_81 Int)) (let ((.cse22 (select |c_#memory_int| |c_mapsum_#in~x.base|))) (let ((.cse19 (mod (let ((.cse23 (* v_mapsum_~i~0_81 4))) (+ (* v_mapsum_~i~0_81 2) (select .cse22 (+ .cse23 |c_mapsum_#in~x.offset|)) (select .cse22 (+ .cse23 |c_mapsum_#in~x.offset| 4)) 1)) 4294967296))) (and (<= c_~N~0 (+ v_mapsum_~i~0_81 2)) (not (= .cse19 (mod (let ((.cse21 (+ |c_mapsum_#in~x.offset| 4))) (let ((.cse20 (store (store .cse22 |c_mapsum_#in~x.offset| (select .cse22 .cse21)) (+ (* c_~N~0 4) |c_mapsum_#in~x.offset| (- 4)) (select .cse22 |c_mapsum_#in~x.offset|)))) (+ (select .cse20 |c_mapsum_#in~x.offset|) (select .cse20 .cse21) 1))) 4294967296))) (< (+ v_mapsum_~i~0_81 1) c_~N~0) (< 2147483647 .cse19))))) (= .cse1 (+ |c_mapsum_#res| 4294967296)) (exists ((v_prenex_395 Int)) (let ((.cse26 (select |c_#memory_int| |c_mapsum_#in~x.base|))) (let ((.cse27 (mod (let ((.cse28 (* v_prenex_395 4))) (+ (select .cse26 (+ |c_mapsum_#in~x.offset| .cse28 4)) (* v_prenex_395 2) (select .cse26 (+ |c_mapsum_#in~x.offset| .cse28)) 1)) 4294967296))) (and (<= c_~N~0 (+ v_prenex_395 2)) (not (= (mod (let ((.cse25 (+ |c_mapsum_#in~x.offset| 4))) (let ((.cse24 (store (store .cse26 |c_mapsum_#in~x.offset| (select .cse26 .cse25)) (+ (* c_~N~0 4) |c_mapsum_#in~x.offset| (- 4)) (select .cse26 |c_mapsum_#in~x.offset|)))) (+ (select .cse24 |c_mapsum_#in~x.offset|) (select .cse24 .cse25) 1))) 4294967296) (+ .cse27 4294967296))) (<= .cse27 2147483647) (< (+ v_prenex_395 1) c_~N~0))))))))) is different from false [2019-10-15 01:30:48,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 284