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/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:04:24,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:04:24,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:04:24,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:04:24,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:04:24,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:04:24,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:04:24,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:04:24,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:04:24,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:04:24,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:04:24,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:04:24,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:04:24,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:04:24,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:04:24,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:04:24,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:04:24,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:04:24,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:04:24,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:04:24,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:04:24,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:04:24,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:04:24,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:04:24,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:04:24,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:04:24,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:04:24,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:04:24,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:04:24,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:04:24,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:04:24,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:04:24,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:04:24,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:04:24,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:04:24,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:04:24,359 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 03:04:24,399 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:04:24,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:04:24,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:04:24,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:04:24,403 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:04:24,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:04:24,403 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:04:24,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:04:24,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:04:24,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:04:24,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:04:24,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:04:24,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:04:24,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:04:24,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:04:24,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:04:24,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:04:24,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:04:24,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:04:24,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:04:24,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:04:24,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:04:24,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:04:24,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:04:24,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:04:24,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:04:24,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:04:24,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:04:24,412 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 03:04:24,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:04:24,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:04:24,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:04:24,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:04:24,749 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:04:24,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-15 03:04:24,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4440d79/9438b0b4c3ef47349217403fcd0a2d87/FLAG03c37a758 [2019-10-15 03:04:25,353 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:04:25,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-15 03:04:25,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4440d79/9438b0b4c3ef47349217403fcd0a2d87/FLAG03c37a758 [2019-10-15 03:04:25,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4440d79/9438b0b4c3ef47349217403fcd0a2d87 [2019-10-15 03:04:25,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:04:25,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:04:25,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:25,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:04:25,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:04:25,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ce7ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:25, skipping insertion in model container [2019-10-15 03:04:25,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:25" (1/1) ... [2019-10-15 03:04:25,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:04:25,802 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:04:26,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:26,146 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:04:26,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:26,332 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:04:26,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26 WrapperNode [2019-10-15 03:04:26,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:26,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:04:26,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:04:26,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:04:26,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (1/1) ... [2019-10-15 03:04:26,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:04:26,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:04:26,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:04:26,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:04:26,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (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 03:04:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:04:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:04:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:04:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:04:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:04:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:04:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:04:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:04:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:04:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:04:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:04:26,746 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:04:26,746 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:04:26,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:26 BoogieIcfgContainer [2019-10-15 03:04:26,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:04:26,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:04:26,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:04:26,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:04:26,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:25" (1/3) ... [2019-10-15 03:04:26,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df0bb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:26, skipping insertion in model container [2019-10-15 03:04:26,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:26" (2/3) ... [2019-10-15 03:04:26,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df0bb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:26, skipping insertion in model container [2019-10-15 03:04:26,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:26" (3/3) ... [2019-10-15 03:04:26,759 INFO L109 eAbstractionObserver]: Analyzing ICFG cohencu.c [2019-10-15 03:04:26,771 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:04:26,780 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:04:26,793 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:04:26,821 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:04:26,821 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:04:26,822 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:04:26,822 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:04:26,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:04:26,822 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:04:26,822 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:04:26,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:04:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-15 03:04:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:26,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:26,857 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:26,861 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2104671198, now seen corresponding path program 1 times [2019-10-15 03:04:26,899 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:26,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566935047] [2019-10-15 03:04:26,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:26,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:27,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566935047] [2019-10-15 03:04:27,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:27,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:04:27,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956605552] [2019-10-15 03:04:27,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:04:27,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:27,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:04:27,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:27,119 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-15 03:04:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:27,163 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2019-10-15 03:04:27,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:04:27,165 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:04:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:27,180 INFO L225 Difference]: With dead ends: 51 [2019-10-15 03:04:27,181 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 03:04:27,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 03:04:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-15 03:04:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-15 03:04:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-10-15 03:04:27,258 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2019-10-15 03:04:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:27,259 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-10-15 03:04:27,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:04:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2019-10-15 03:04:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:27,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:27,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:27,271 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:27,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2134586928, now seen corresponding path program 1 times [2019-10-15 03:04:27,273 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:27,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547654525] [2019-10-15 03:04:27,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:27,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:27,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:27,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547654525] [2019-10-15 03:04:27,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:27,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:04:27,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060831145] [2019-10-15 03:04:27,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:04:27,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:04:27,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:04:27,491 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 5 states. [2019-10-15 03:04:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:27,630 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2019-10-15 03:04:27,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:04:27,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:04:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:27,632 INFO L225 Difference]: With dead ends: 30 [2019-10-15 03:04:27,633 INFO L226 Difference]: Without dead ends: 28 [2019-10-15 03:04:27,634 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:04:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-15 03:04:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-15 03:04:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 03:04:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2019-10-15 03:04:27,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2019-10-15 03:04:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:27,675 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2019-10-15 03:04:27,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:04:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2019-10-15 03:04:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 03:04:27,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:27,677 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:27,677 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1496147284, now seen corresponding path program 1 times [2019-10-15 03:04:27,678 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:27,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942847543] [2019-10-15 03:04:27,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:27,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:27,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:27,707 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:27,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087575644] [2019-10-15 03:04:27,708 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 03:04:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:27,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 03:04:27,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:27,925 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:28,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:28,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:28,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:04:28,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942847543] [2019-10-15 03:04:28,166 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:28,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087575644] [2019-10-15 03:04:28,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1155236847] [2019-10-15 03:04:28,208 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 03:04:28,209 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:04:28,216 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:04:28,227 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:04:28,228 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:04:28,289 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:04:28,559 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:04:28,637 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:04:28,642 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:04:28,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:04:28,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2019-10-15 03:04:28,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395626106] [2019-10-15 03:04:28,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:04:28,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:04:28,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:04:28,947 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2019-10-15 03:04:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:29,223 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2019-10-15 03:04:29,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:04:29,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-15 03:04:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:29,230 INFO L225 Difference]: With dead ends: 51 [2019-10-15 03:04:29,230 INFO L226 Difference]: Without dead ends: 43 [2019-10-15 03:04:29,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:04:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-15 03:04:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-15 03:04:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-15 03:04:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2019-10-15 03:04:29,265 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2019-10-15 03:04:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:29,266 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2019-10-15 03:04:29,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:04:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2019-10-15 03:04:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:04:29,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:29,268 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:29,468 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:29,469 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:29,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1836902192, now seen corresponding path program 1 times [2019-10-15 03:04:29,470 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:29,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850014773] [2019-10-15 03:04:29,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:29,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:29,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:29,480 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:29,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928072636] [2019-10-15 03:04:29,481 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 03:04:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:29,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:04:29,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 03:04:29,641 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 03:04:29,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850014773] [2019-10-15 03:04:29,853 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:29,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928072636] [2019-10-15 03:04:29,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [14522966] [2019-10-15 03:04:29,855 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-15 03:04:29,856 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:04:29,856 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:04:29,857 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:04:29,857 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:04:29,869 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:04:31,017 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:04:31,072 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:04:31,077 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:04:31,690 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:04:31,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 21 [2019-10-15 03:04:31,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97043799] [2019-10-15 03:04:31,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 03:04:31,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:31,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 03:04:31,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:04:31,693 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand 21 states. [2019-10-15 03:04:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:31,773 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-10-15 03:04:31,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:04:31,773 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2019-10-15 03:04:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:31,774 INFO L225 Difference]: With dead ends: 47 [2019-10-15 03:04:31,774 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:04:31,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:04:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:04:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:04:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:04:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:04:31,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-10-15 03:04:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:31,777 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:04:31,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 03:04:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:04:31,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:04:31,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:31,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:04:32,455 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-10-15 03:04:32,459 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:04:32,459 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:04:32,459 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:04:32,459 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:04:32,459 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:04:32,459 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:04:32,460 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: false [2019-10-15 03:04:32,460 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: false [2019-10-15 03:04:32,460 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 48) no Hoare annotation was computed. [2019-10-15 03:04:32,460 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,461 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,461 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,461 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,462 INFO L439 ceAbstractionStarter]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,462 INFO L443 ceAbstractionStarter]: For program point L30(lines 25 38) no Hoare annotation was computed. [2019-10-15 03:04:32,462 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 48) the Hoare annotation is: true [2019-10-15 03:04:32,462 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: false [2019-10-15 03:04:32,463 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,463 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,463 INFO L443 ceAbstractionStarter]: For program point L45(line 45) no Hoare annotation was computed. [2019-10-15 03:04:32,463 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,464 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-15 03:04:32,464 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-10-15 03:04:32,464 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-10-15 03:04:32,464 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-10-15 03:04:32,464 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-15 03:04:32,464 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-10-15 03:04:32,465 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-15 03:04:32,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:04:32 BoogieIcfgContainer [2019-10-15 03:04:32,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:04:32,493 INFO L168 Benchmark]: Toolchain (without parser) took 6734.61 ms. Allocated memory was 135.3 MB in the beginning and 251.7 MB in the end (delta: 116.4 MB). Free memory was 98.5 MB in the beginning and 172.2 MB in the end (delta: -73.8 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,496 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.58 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 98.3 MB in the beginning and 179.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,501 INFO L168 Benchmark]: Boogie Preprocessor took 59.87 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 177.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,502 INFO L168 Benchmark]: RCFGBuilder took 354.78 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 164.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,503 INFO L168 Benchmark]: TraceAbstraction took 5740.58 ms. Allocated memory was 200.3 MB in the beginning and 251.7 MB in the end (delta: 51.4 MB). Free memory was 163.5 MB in the beginning and 172.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:32,512 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 573.58 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 98.3 MB in the beginning and 179.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.87 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 177.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.78 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 164.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5740.58 ms. Allocated memory was 200.3 MB in the beginning and 251.7 MB in the end (delta: 51.4 MB). Free memory was 163.5 MB in the beginning and 172.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((y == 1 && x == 0) && z == 6) && 6 * n + 6 <= z) && 0 <= a + 2147483648) && a <= 2147483647) && z < 6 * n + 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 7, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 105 SDtfs, 24 SDslu, 179 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 136 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 49 PreInvPairs, 58 NumberOfFragments, 296 HoareAnnotationTreeSize, 49 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 17296 SizeOfPredicates, 7 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 116/154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1657, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 139, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 28, TOOLS_POST_TIME[ms]: 17, TOOLS_POST_CALL_APPLICATIONS: 68, TOOLS_POST_CALL_TIME[ms]: 375, TOOLS_POST_RETURN_APPLICATIONS: 58, TOOLS_POST_RETURN_TIME[ms]: 109, TOOLS_QUANTIFIERELIM_APPLICATIONS: 154, TOOLS_QUANTIFIERELIM_TIME[ms]: 427, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 22, FLUID_QUERY_TIME[ms]: 9, FLUID_QUERIES: 142, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 101, DOMAIN_JOIN_TIME[ms]: 901, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 53, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 40, DOMAIN_ISBOTTOM_TIME[ms]: 70, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 589, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 588, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 58, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 33, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 31, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 28, DAG_COMPRESSION_PROCESSED_NODES: 271, DAG_COMPRESSION_RETAINED_NODES: 174, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...