java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:46:43,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:46:43,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:46:43,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:46:43,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:46:43,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:46:43,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:46:43,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:46:43,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:46:43,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:46:43,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:46:43,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:46:43,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:46:43,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:46:44,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:46:44,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:46:44,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:46:44,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:46:44,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:46:44,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:46:44,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:46:44,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:46:44,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:46:44,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:46:44,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:46:44,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:46:44,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:46:44,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:46:44,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:46:44,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:46:44,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:46:44,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:46:44,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:46:44,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:46:44,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:46:44,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:46:44,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 13:46:44,068 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:46:44,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:46:44,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:46:44,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:46:44,073 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:46:44,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:46:44,073 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:46:44,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:46:44,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:46:44,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:46:44,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:46:44,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:46:44,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:46:44,076 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:46:44,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:46:44,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:46:44,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:46:44,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:46:44,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:46:44,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:46:44,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:46:44,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:44,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:46:44,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:46:44,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:46:44,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:46:44,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:46:44,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:46:44,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:46:44,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:46:44,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:46:44,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:46:44,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:46:44,415 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:46:44,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2019-10-07 13:46:44,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fd84bdb/e665f7aa0da04373bc8e6e3369efa53f/FLAGeae3429aa [2019-10-07 13:46:44,913 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:46:44,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2019-10-07 13:46:44,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fd84bdb/e665f7aa0da04373bc8e6e3369efa53f/FLAGeae3429aa [2019-10-07 13:46:45,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fd84bdb/e665f7aa0da04373bc8e6e3369efa53f [2019-10-07 13:46:45,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:46:45,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:46:45,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:45,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:46:45,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:46:45,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f9260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45, skipping insertion in model container [2019-10-07 13:46:45,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,347 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:46:45,368 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:46:45,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:45,574 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:46:45,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:46:45,598 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:46:45,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45 WrapperNode [2019-10-07 13:46:45,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:46:45,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:46:45,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:46:45,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:46:45,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... [2019-10-07 13:46:45,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:46:45,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:46:45,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:46:45,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:46:45,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:46:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:46:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:46:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:46:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:46:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:46:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:46:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-07 13:46:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:46:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:46:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:46:45,989 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:46:45,989 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:46:45,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:45 BoogieIcfgContainer [2019-10-07 13:46:45,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:46:46,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:46:46,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:46:46,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:46:46,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:46:45" (1/3) ... [2019-10-07 13:46:46,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55d051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:46, skipping insertion in model container [2019-10-07 13:46:46,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:46:45" (2/3) ... [2019-10-07 13:46:46,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e55d051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:46:46, skipping insertion in model container [2019-10-07 13:46:46,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:46:45" (3/3) ... [2019-10-07 13:46:46,013 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2019-10-07 13:46:46,027 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:46:46,048 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:46:46,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:46:46,082 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:46:46,083 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:46:46,083 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:46:46,083 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:46:46,083 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:46:46,083 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:46:46,083 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:46:46,084 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:46:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-07 13:46:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:46:46,104 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:46,105 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:46,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1736341467, now seen corresponding path program 1 times [2019-10-07 13:46:46,119 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:46,119 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:46,120 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:46,120 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:46,445 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2019-10-07 13:46:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:46,574 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:46,575 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:46:46,575 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:46:46,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:46:46,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:46:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:46:46,596 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-10-07 13:46:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:46,703 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-10-07 13:46:46,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:46:46,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-07 13:46:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:46,714 INFO L225 Difference]: With dead ends: 31 [2019-10-07 13:46:46,715 INFO L226 Difference]: Without dead ends: 20 [2019-10-07 13:46:46,719 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:46:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-07 13:46:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-10-07 13:46:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 13:46:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-07 13:46:46,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-10-07 13:46:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:46,765 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-07 13:46:46,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:46:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-07 13:46:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-07 13:46:46,766 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:46:46,767 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:46:46,767 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:46:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:46:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash -239611021, now seen corresponding path program 1 times [2019-10-07 13:46:46,768 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:46:46,769 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:46,769 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:46,769 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:46:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:46:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:47,058 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:46:47,059 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:46:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:46:47,113 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 13:46:47,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:46:47,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:47,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:47,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:46:47,440 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:46:49,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:51,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,143 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= 0 c_main_~sn~0)) (.cse5 (* 2 c_main_~x~0)) (.cse0 (mod c_main_~sn~0 4294967296))) (or (let ((.cse1 (mod (+ .cse5 2) 4294967296)) (.cse3 (mod c_main_~x~0 4294967296))) (and (or (= .cse0 .cse1) .cse2 (< .cse3 10)) (let ((.cse4 (+ c_main_~sn~0 2))) (or (= (mod .cse4 4294967296) .cse1) (= 0 .cse4) (<= 10 .cse3))))) (and (not .cse2) (not (= (mod .cse5 4294967296) .cse0))))) is different from true [2019-10-07 13:46:54,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:46:54,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:46:54,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:46:54,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:46:54,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:46:54,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:47:23,368 WARN L191 SmtUtils]: Spent 22.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-10-07 13:47:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-10-07 13:47:23,381 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:47:23,414 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-07 13:47:23,415 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:47:23,422 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:47:23,428 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:47:23,428 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:47:23,479 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:47:23,708 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:47:23,742 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:47:23,745 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:47:23,745 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:47:23,746 INFO L193 IcfgInterpreter]: Reachable states at location L3-2 satisfy 135#(and (or (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:47:23,746 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 144#true [2019-10-07 13:47:23,746 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 140#(and (or (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:47:23,747 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 125#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:47:23,747 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 130#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:47:23,747 INFO L193 IcfgInterpreter]: Reachable states at location L3 satisfy 120#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:47:23,747 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:47:23,748 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:47:23,748 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 149#true [2019-10-07 13:47:23,748 INFO L193 IcfgInterpreter]: Reachable states at location L18-1 satisfy 111#(and (or (and (<= 1 main_~x~0) (<= 2 main_~sn~0)) (and (<= main_~sn~0 0) (<= main_~x~0 0))) (<= 0 main_~sn~0) (<= 0 main_~x~0)) [2019-10-07 13:47:23,748 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:47:23,749 INFO L193 IcfgInterpreter]: Reachable states at location L18 satisfy 95#(and (<= 1 main_~x~0) (<= 2 main_~sn~0)) [2019-10-07 13:47:23,749 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 115#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:47:29,027 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:47:29,027 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9, 7] total 23 [2019-10-07 13:47:29,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 13:47:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 13:47:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=369, Unknown=8, NotChecked=40, Total=506 [2019-10-07 13:47:29,031 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 23 states. [2019-10-07 13:48:06,522 WARN L191 SmtUtils]: Spent 34.32 s on a formula simplification. DAG size of input: 62 DAG size of output: 20 [2019-10-07 13:48:36,334 WARN L191 SmtUtils]: Spent 24.86 s on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2019-10-07 13:49:22,651 WARN L191 SmtUtils]: Spent 38.61 s on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2019-10-07 13:49:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:49:37,828 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-07 13:49:37,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 13:49:37,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 16 [2019-10-07 13:49:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:49:37,832 INFO L225 Difference]: With dead ends: 31 [2019-10-07 13:49:37,833 INFO L226 Difference]: Without dead ends: 29 [2019-10-07 13:49:37,834 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 154.6s TimeCoverageRelationStatistics Valid=127, Invalid=515, Unknown=12, NotChecked=48, Total=702 [2019-10-07 13:49:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-07 13:49:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-07 13:49:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-07 13:49:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-07 13:49:37,858 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2019-10-07 13:49:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:49:37,858 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-07 13:49:37,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 13:49:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-07 13:49:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-07 13:49:37,870 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:49:37,870 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:49:38,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:49:38,075 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:49:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:49:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1844547027, now seen corresponding path program 2 times [2019-10-07 13:49:38,076 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:49:38,076 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:49:38,076 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:49:38,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:49:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:49:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:49:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:49:38,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:49:38,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:49:38,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true