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/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:42:14,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:42:14,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:42:14,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:42:14,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:42:14,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:42:14,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:42:14,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:42:14,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:42:14,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:42:14,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:42:14,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:42:14,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:42:14,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:42:14,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:42:14,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:42:14,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:42:14,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:42:14,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:42:14,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:42:14,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:42:14,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:42:14,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:42:14,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:42:14,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:42:14,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:42:14,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:42:14,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:42:14,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:42:14,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:42:14,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:42:14,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:42:14,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:42:14,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:42:14,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:42:14,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:42:14,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:42:14,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:42:14,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:42:14,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:42:14,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:42:14,093 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 13:42:14,120 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:42:14,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:42:14,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:42:14,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:42:14,129 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:42:14,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:42:14,132 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:42:14,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:42:14,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:42:14,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:42:14,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:42:14,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:42:14,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:42:14,134 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:42:14,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:42:14,134 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:42:14,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:42:14,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:42:14,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:42:14,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:42:14,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:42:14,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:42:14,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:42:14,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:42:14,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:42:14,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:42:14,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:42:14,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:42:14,138 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 13:42:14,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:42:14,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:42:14,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:42:14,437 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:42:14,438 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:42:14,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2019-10-07 13:42:14,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6896560/2b3bb753b10a4f49891b5855ea1a2af5/FLAG990f2c3f5 [2019-10-07 13:42:14,979 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:42:14,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2019-10-07 13:42:14,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6896560/2b3bb753b10a4f49891b5855ea1a2af5/FLAG990f2c3f5 [2019-10-07 13:42:15,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6896560/2b3bb753b10a4f49891b5855ea1a2af5 [2019-10-07 13:42:15,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:42:15,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:42:15,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:42:15,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:42:15,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:42:15,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311a6bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15, skipping insertion in model container [2019-10-07 13:42:15,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:42:15,408 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:42:15,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:42:15,703 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:42:15,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:42:15,880 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:42:15,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15 WrapperNode [2019-10-07 13:42:15,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:42:15,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:42:15,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:42:15,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:42:15,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (1/1) ... [2019-10-07 13:42:15,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:42:15,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:42:15,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:42:15,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:42:15,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (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 13:42:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:42:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:42:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:42:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:42:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:42:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:42:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:42:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:42:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:42:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:42:16,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:42:16,482 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 13:42:16,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:42:16 BoogieIcfgContainer [2019-10-07 13:42:16,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:42:16,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:42:16,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:42:16,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:42:16,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:42:15" (1/3) ... [2019-10-07 13:42:16,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c2b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:42:16, skipping insertion in model container [2019-10-07 13:42:16,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:15" (2/3) ... [2019-10-07 13:42:16,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c2b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:42:16, skipping insertion in model container [2019-10-07 13:42:16,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:42:16" (3/3) ... [2019-10-07 13:42:16,499 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2019-10-07 13:42:16,508 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:42:16,516 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:42:16,528 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:42:16,555 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:42:16,555 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:42:16,555 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:42:16,555 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:42:16,556 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:42:16,556 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:42:16,556 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:42:16,556 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:42:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-07 13:42:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-07 13:42:16,578 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:16,578 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:16,580 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1133679609, now seen corresponding path program 1 times [2019-10-07 13:42:16,591 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:16,591 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:16,591 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:16,592 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:16,953 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 13:42:16,954 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:16,955 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:42:16,956 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 13:42:16,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 13:42:16,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 13:42:16,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:42:16,981 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 12 states. [2019-10-07 13:42:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:42:17,098 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2019-10-07 13:42:17,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:42:17,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-10-07 13:42:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:42:17,109 INFO L225 Difference]: With dead ends: 30 [2019-10-07 13:42:17,110 INFO L226 Difference]: Without dead ends: 19 [2019-10-07 13:42:17,113 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:42:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-07 13:42:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-07 13:42:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 13:42:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-07 13:42:17,149 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2019-10-07 13:42:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:42:17,149 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-07 13:42:17,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 13:42:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-07 13:42:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 13:42:17,150 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:17,150 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:17,151 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash 786024767, now seen corresponding path program 1 times [2019-10-07 13:42:17,152 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:17,152 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:17,152 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:17,152 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:17,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:17,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:42:17,385 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 13:42:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:17,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 13:42:17,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:42:17,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:17,657 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:42:17,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:17,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:18,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:42:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:18,079 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:42:18,104 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:42:18,104 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:42:18,111 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:42:18,119 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:42:18,120 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:42:18,231 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-10-07 13:42:18,594 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:42:18,600 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:42:18,600 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:42:18,601 INFO L193 IcfgInterpreter]: Reachable states at location L118 satisfy 78#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= 8 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,601 INFO L193 IcfgInterpreter]: Reachable states at location L12 satisfy 38#(and (<= main_~main__y~0 50) (<= 0 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 0)) [2019-10-07 13:42:18,602 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 148#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:42:18,602 INFO L193 IcfgInterpreter]: Reachable states at location L130 satisfy 73#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 7) (<= 7 main_~main__x~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (= 7 main_~main__x~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,602 INFO L193 IcfgInterpreter]: Reachable states at location L142 satisfy 68#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= 6 main_~main__x~0) (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,602 INFO L193 IcfgInterpreter]: Reachable states at location L89 satisfy 134#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:18,603 INFO L193 IcfgInterpreter]: Reachable states at location L154 satisfy 63#(and (<= main_~main__y~0 50) (<= main_~main__x~0 5) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= 5 main_~main__x~0) (<= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,603 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:18,603 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0)) [2019-10-07 13:42:18,604 INFO L193 IcfgInterpreter]: Reachable states at location L91 satisfy 139#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:18,604 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 153#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:18,604 INFO L193 IcfgInterpreter]: Reachable states at location L166 satisfy 58#(and (<= main_~main__y~0 50) (<= 4 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,604 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:42:18,605 INFO L193 IcfgInterpreter]: Reachable states at location L178 satisfy 53#(and (<= main_~main__y~0 50) (= 3 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 3)) [2019-10-07 13:42:18,605 INFO L193 IcfgInterpreter]: Reachable states at location L190 satisfy 48#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= 2 main_~main__x~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 2) (= 2 main_~main__x~0)) [2019-10-07 13:42:18,605 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 144#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:18,606 INFO L193 IcfgInterpreter]: Reachable states at location L202 satisfy 43#(and (<= main_~main__y~0 50) (= 1 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 1 main_~main__x~0) (<= 0 ~__return_main~0) (<= main_~main__x~0 1) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:18,606 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 129#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0)) [2019-10-07 13:42:19,326 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:42:19,327 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 15] total 39 [2019-10-07 13:42:19,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-10-07 13:42:19,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-10-07 13:42:19,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=986, Unknown=0, NotChecked=0, Total=1482 [2019-10-07 13:42:19,332 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 39 states. [2019-10-07 13:42:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:42:20,597 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2019-10-07 13:42:20,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-07 13:42:20,604 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 18 [2019-10-07 13:42:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:42:20,605 INFO L225 Difference]: With dead ends: 34 [2019-10-07 13:42:20,605 INFO L226 Difference]: Without dead ends: 31 [2019-10-07 13:42:20,608 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 19 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1026, Invalid=3134, Unknown=0, NotChecked=0, Total=4160 [2019-10-07 13:42:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-07 13:42:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-07 13:42:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-07 13:42:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-10-07 13:42:20,616 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18 [2019-10-07 13:42:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:42:20,616 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-10-07 13:42:20,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-10-07 13:42:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-10-07 13:42:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 13:42:20,617 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:20,618 INFO L385 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:20,821 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:20,822 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1081226431, now seen corresponding path program 2 times [2019-10-07 13:42:20,823 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:20,823 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:20,823 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:20,824 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:21,260 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:21,260 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:42:21,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:21,311 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-10-07 13:42:21,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:42:21,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-07 13:42:21,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:42:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:21,749 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:42:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:22,714 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:42:22,716 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:42:22,716 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:42:22,717 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:42:22,717 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:42:22,717 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:42:22,743 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-07 13:42:22,993 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:42:22,998 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:42:22,998 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:42:22,999 INFO L193 IcfgInterpreter]: Reachable states at location L118 satisfy 78#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 8 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:22,999 INFO L193 IcfgInterpreter]: Reachable states at location L12 satisfy 38#(and (<= main_~main__y~0 50) (<= 0 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 0)) [2019-10-07 13:42:22,999 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 150#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:42:23,000 INFO L193 IcfgInterpreter]: Reachable states at location L130 satisfy 73#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 7) (<= 7 main_~main__x~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (= 7 main_~main__x~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:23,000 INFO L193 IcfgInterpreter]: Reachable states at location L142 satisfy 68#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 6 main_~main__x~0) (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:23,000 INFO L193 IcfgInterpreter]: Reachable states at location L89 satisfy 136#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:23,000 INFO L193 IcfgInterpreter]: Reachable states at location L154 satisfy 63#(and (<= main_~main__y~0 50) (<= main_~main__x~0 5) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= 5 main_~main__x~0) (<= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:23,001 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:23,001 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:23,001 INFO L193 IcfgInterpreter]: Reachable states at location L91 satisfy 141#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:23,001 INFO L193 IcfgInterpreter]: Reachable states at location L166 satisfy 58#(and (<= main_~main__y~0 50) (<= 4 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:23,002 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 155#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:23,002 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:42:23,002 INFO L193 IcfgInterpreter]: Reachable states at location L178 satisfy 53#(and (<= main_~main__y~0 50) (= 3 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 3)) [2019-10-07 13:42:23,002 INFO L193 IcfgInterpreter]: Reachable states at location L190 satisfy 48#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= 2 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 2) (= 2 main_~main__x~0)) [2019-10-07 13:42:23,003 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 146#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:23,003 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 131#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0)) [2019-10-07 13:42:23,003 INFO L193 IcfgInterpreter]: Reachable states at location L202 satisfy 43#(and (<= main_~main__y~0 50) (= 1 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 1 main_~main__x~0) (<= 0 ~__return_main~0) (<= main_~main__x~0 1) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:23,681 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:42:23,681 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 15] total 63 [2019-10-07 13:42:23,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 63 states [2019-10-07 13:42:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2019-10-07 13:42:23,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1564, Invalid=2342, Unknown=0, NotChecked=0, Total=3906 [2019-10-07 13:42:23,686 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 63 states. [2019-10-07 13:42:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:42:26,896 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2019-10-07 13:42:26,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-10-07 13:42:26,897 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 30 [2019-10-07 13:42:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:42:26,898 INFO L225 Difference]: With dead ends: 58 [2019-10-07 13:42:26,899 INFO L226 Difference]: Without dead ends: 55 [2019-10-07 13:42:26,905 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 31 SyntacticMatches, 22 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3702, Invalid=8954, Unknown=0, NotChecked=0, Total=12656 [2019-10-07 13:42:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-07 13:42:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-10-07 13:42:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-07 13:42:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-10-07 13:42:26,915 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 30 [2019-10-07 13:42:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:42:26,916 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-10-07 13:42:26,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 63 states. [2019-10-07 13:42:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-10-07 13:42:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 13:42:26,918 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:26,919 INFO L385 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:27,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:27,123 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -986494017, now seen corresponding path program 3 times [2019-10-07 13:42:27,124 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:27,124 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:27,125 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:27,125 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:28,215 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:28,215 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:42:28,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:28,298 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:42:28,299 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:42:28,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-07 13:42:28,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:42:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:29,534 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:42:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:32,992 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:42:32,997 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:42:32,997 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:42:32,998 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:42:32,999 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:42:32,999 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:42:33,052 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-07 13:42:33,263 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:42:33,266 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:42:33,266 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:42:33,267 INFO L193 IcfgInterpreter]: Reachable states at location L118 satisfy 78#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 8 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:33,267 INFO L193 IcfgInterpreter]: Reachable states at location L12 satisfy 38#(and (<= main_~main__y~0 50) (<= 0 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 0)) [2019-10-07 13:42:33,267 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 150#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:42:33,267 INFO L193 IcfgInterpreter]: Reachable states at location L130 satisfy 73#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 7) (<= 7 main_~main__x~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (= 7 main_~main__x~0) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:33,268 INFO L193 IcfgInterpreter]: Reachable states at location L142 satisfy 68#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 6 main_~main__x~0) (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:33,268 INFO L193 IcfgInterpreter]: Reachable states at location L89 satisfy 136#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:33,268 INFO L193 IcfgInterpreter]: Reachable states at location L154 satisfy 63#(and (<= main_~main__y~0 50) (<= main_~main__x~0 5) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= 5 main_~main__x~0) (<= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:33,268 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:33,269 INFO L193 IcfgInterpreter]: Reachable states at location L91 satisfy 141#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:33,269 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:33,269 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 155#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:42:33,270 INFO L193 IcfgInterpreter]: Reachable states at location L166 satisfy 58#(and (<= main_~main__y~0 50) (<= 4 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:33,270 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:42:33,271 INFO L193 IcfgInterpreter]: Reachable states at location L178 satisfy 53#(and (<= main_~main__y~0 50) (= 3 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 3)) [2019-10-07 13:42:33,271 INFO L193 IcfgInterpreter]: Reachable states at location L190 satisfy 48#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= 2 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 2) (= 2 main_~main__x~0)) [2019-10-07 13:42:33,271 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 146#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:42:33,272 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 131#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0)) [2019-10-07 13:42:33,272 INFO L193 IcfgInterpreter]: Reachable states at location L202 satisfy 43#(and (<= main_~main__y~0 50) (= 1 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 1 main_~main__x~0) (<= 0 ~__return_main~0) (<= main_~main__x~0 1) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:42:34,414 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:42:34,414 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49, 15] total 111 [2019-10-07 13:42:34,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 111 states [2019-10-07 13:42:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2019-10-07 13:42:34,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5428, Invalid=6782, Unknown=0, NotChecked=0, Total=12210 [2019-10-07 13:42:34,420 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 111 states. [2019-10-07 13:42:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:42:43,031 INFO L93 Difference]: Finished difference Result 106 states and 153 transitions. [2019-10-07 13:42:43,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-10-07 13:42:43,031 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 54 [2019-10-07 13:42:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:42:43,033 INFO L225 Difference]: With dead ends: 106 [2019-10-07 13:42:43,034 INFO L226 Difference]: Without dead ends: 103 [2019-10-07 13:42:43,042 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 55 SyntacticMatches, 46 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10298 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=14238, Invalid=29234, Unknown=0, NotChecked=0, Total=43472 [2019-10-07 13:42:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-07 13:42:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-10-07 13:42:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-10-07 13:42:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2019-10-07 13:42:43,057 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 54 [2019-10-07 13:42:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:42:43,058 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2019-10-07 13:42:43,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 111 states. [2019-10-07 13:42:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2019-10-07 13:42:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-07 13:42:43,060 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:43,060 INFO L385 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:43,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:43,264 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:43,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1451853377, now seen corresponding path program 4 times [2019-10-07 13:42:43,264 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:43,265 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:43,265 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:43,265 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:48,834 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:48,834 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:42:48,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:42:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:48,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 97 conjunts are in the unsatisfiable core [2019-10-07 13:42:48,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:42:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:42:53,604 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:43:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:04,455 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:43:04,456 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:43:04,457 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:43:04,457 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:43:04,457 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:43:04,457 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:43:04,478 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-07 13:43:04,615 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:43:04,619 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:43:04,620 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:43:04,620 INFO L193 IcfgInterpreter]: Reachable states at location L118 satisfy 78#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= 8 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:04,620 INFO L193 IcfgInterpreter]: Reachable states at location L12 satisfy 38#(and (<= main_~main__y~0 50) (<= 0 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 0)) [2019-10-07 13:43:04,620 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 150#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:43:04,621 INFO L193 IcfgInterpreter]: Reachable states at location L130 satisfy 73#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 7) (<= 7 main_~main__x~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (= 7 main_~main__x~0) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:04,621 INFO L193 IcfgInterpreter]: Reachable states at location L142 satisfy 68#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= 6 main_~main__x~0) (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:04,621 INFO L193 IcfgInterpreter]: Reachable states at location L89 satisfy 136#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:43:04,622 INFO L193 IcfgInterpreter]: Reachable states at location L154 satisfy 63#(and (<= main_~main__y~0 50) (<= main_~main__x~0 5) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= 5 main_~main__x~0) (<= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:04,622 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:43:04,622 INFO L193 IcfgInterpreter]: Reachable states at location L91 satisfy 141#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:43:04,622 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0)) [2019-10-07 13:43:04,626 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 155#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:43:04,627 INFO L193 IcfgInterpreter]: Reachable states at location L166 satisfy 58#(and (<= main_~main__y~0 50) (<= 4 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:04,627 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:43:04,627 INFO L193 IcfgInterpreter]: Reachable states at location L178 satisfy 53#(and (<= main_~main__y~0 50) (= 3 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 3)) [2019-10-07 13:43:04,627 INFO L193 IcfgInterpreter]: Reachable states at location L190 satisfy 48#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= 2 main_~main__x~0) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 2) (= 2 main_~main__x~0)) [2019-10-07 13:43:04,628 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 146#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:43:04,628 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 131#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0)) [2019-10-07 13:43:04,628 INFO L193 IcfgInterpreter]: Reachable states at location L202 satisfy 43#(and (<= main_~main__y~0 50) (= 1 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 1 main_~main__x~0) (<= 0 ~__return_main~0) (<= main_~main__x~0 1) (<= ~__return_main~0 0) (<= |old(~__return_720~0)| 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:43:06,867 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:43:06,868 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97, 15] total 207 [2019-10-07 13:43:06,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 207 states [2019-10-07 13:43:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2019-10-07 13:43:06,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10782, Invalid=31860, Unknown=0, NotChecked=0, Total=42642 [2019-10-07 13:43:06,874 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 207 states. [2019-10-07 13:43:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:43:20,937 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2019-10-07 13:43:20,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-10-07 13:43:20,938 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 102 [2019-10-07 13:43:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:43:20,940 INFO L225 Difference]: With dead ends: 112 [2019-10-07 13:43:20,940 INFO L226 Difference]: Without dead ends: 109 [2019-10-07 13:43:20,944 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 102 SyntacticMatches, 95 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18946 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=17175, Invalid=79235, Unknown=0, NotChecked=0, Total=96410 [2019-10-07 13:43:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-07 13:43:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-07 13:43:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-07 13:43:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2019-10-07 13:43:20,959 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2019-10-07 13:43:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:43:20,960 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2019-10-07 13:43:20,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 207 states. [2019-10-07 13:43:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2019-10-07 13:43:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 13:43:20,962 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:43:20,962 INFO L385 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:43:21,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:43:21,166 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:43:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:43:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1391654783, now seen corresponding path program 5 times [2019-10-07 13:43:21,168 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:43:21,168 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:21,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,169 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:43:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:27,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:27,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:43:27,129 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:43:27,355 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2019-10-07 13:43:27,356 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:43:27,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 111 conjunts are in the unsatisfiable core [2019-10-07 13:43:27,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:43:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:36,767 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:43:47,046 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-10-07 13:43:47,609 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-10-07 13:43:48,285 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-10-07 13:43:48,945 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-07 13:43:49,701 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-10-07 13:43:50,487 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-10-07 13:43:51,346 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-10-07 13:43:52,209 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-07 13:43:53,073 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-10-07 13:43:54,066 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2019-10-07 13:43:55,269 WARN L191 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-10-07 13:43:56,359 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2019-10-07 13:43:57,438 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2019-10-07 13:43:58,588 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2019-10-07 13:44:00,177 WARN L191 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 107 [2019-10-07 13:44:01,405 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2019-10-07 13:44:02,982 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 117 [2019-10-07 13:44:04,375 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 124 [2019-10-07 13:44:05,771 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 131 [2019-10-07 13:44:07,222 WARN L191 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 138 [2019-10-07 13:44:08,782 WARN L191 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 143 [2019-10-07 13:44:10,407 WARN L191 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 150 [2019-10-07 13:44:12,141 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 157 [2019-10-07 13:44:13,968 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 164 [2019-10-07 13:44:15,882 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 171 [2019-10-07 13:44:17,892 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 178 [2019-10-07 13:44:20,019 WARN L191 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 185 [2019-10-07 13:44:22,198 WARN L191 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 186 [2019-10-07 13:44:25,522 WARN L191 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 210 DAG size of output: 177 [2019-10-07 13:44:28,210 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 216 DAG size of output: 182 [2019-10-07 13:44:30,874 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 222 DAG size of output: 187 [2019-10-07 13:44:33,072 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 194 [2019-10-07 13:44:36,150 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 234 DAG size of output: 197 [2019-10-07 13:44:38,460 WARN L191 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 204 [2019-10-07 13:44:40,812 WARN L191 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 211 [2019-10-07 13:44:43,260 WARN L191 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 218 [2019-10-07 13:44:47,065 WARN L191 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 258 DAG size of output: 217 [2019-10-07 13:44:50,407 WARN L191 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 264 DAG size of output: 222 [2019-10-07 13:44:53,133 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 274 DAG size of output: 229 [2019-10-07 13:44:55,837 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 284 DAG size of output: 236 [2019-10-07 13:44:59,845 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 282 DAG size of output: 237 [2019-10-07 13:45:03,590 WARN L191 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 288 DAG size of output: 242 [2019-10-07 13:45:07,452 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 294 DAG size of output: 247 [2019-10-07 13:45:10,448 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 304 DAG size of output: 254 [2019-10-07 13:45:14,678 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 306 DAG size of output: 257 [2019-10-07 13:45:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:14,942 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:45:14,943 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:45:14,944 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:45:14,944 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:45:14,944 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:45:14,944 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:45:14,968 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-07 13:45:15,094 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 13:45:15,098 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:45:15,098 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:45:15,098 INFO L193 IcfgInterpreter]: Reachable states at location L118 satisfy 78#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 8 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:15,098 INFO L193 IcfgInterpreter]: Reachable states at location L12 satisfy 38#(and (<= main_~main__y~0 50) (<= 0 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= 0 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 0)) [2019-10-07 13:45:15,099 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 148#(and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:45:15,099 INFO L193 IcfgInterpreter]: Reachable states at location L130 satisfy 73#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (<= main_~main__x~0 7) (<= 7 main_~main__x~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (= 7 main_~main__x~0) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:15,099 INFO L193 IcfgInterpreter]: Reachable states at location L142 satisfy 68#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= 6 main_~main__x~0) (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:15,100 INFO L193 IcfgInterpreter]: Reachable states at location L89 satisfy 134#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= main_~__VERIFIER_assert__cond~0 1) (<= main_~__tmp_1~0 1) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:45:15,100 INFO L193 IcfgInterpreter]: Reachable states at location L154 satisfy 63#(and (<= main_~main__y~0 50) (<= main_~main__x~0 5) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= 5 main_~main__x~0) (<= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:15,100 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:45:15,100 INFO L193 IcfgInterpreter]: Reachable states at location L91 satisfy 139#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:45:15,101 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0)) [2019-10-07 13:45:15,101 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 153#(and (= ~__return_720~0 0) (<= 0 ~__return_720~0) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= ~__return_main~0 0)) [2019-10-07 13:45:15,101 INFO L193 IcfgInterpreter]: Reachable states at location L166 satisfy 58#(and (<= main_~main__y~0 50) (<= 4 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:15,101 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:45:15,101 INFO L193 IcfgInterpreter]: Reachable states at location L178 satisfy 53#(and (<= main_~main__y~0 50) (= 3 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 3)) [2019-10-07 13:45:15,102 INFO L193 IcfgInterpreter]: Reachable states at location L190 satisfy 48#(and (<= main_~main__y~0 50) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= 2 main_~main__x~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= main_~main__x~0 2) (= 2 main_~main__x~0)) [2019-10-07 13:45:15,102 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 144#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (<= main_~__VERIFIER_assert__cond~0 0) (= main_~__VERIFIER_assert__cond~0 0) (not (< main_~main__x~0 100)) (= main_~__tmp_1~0 main_~__VERIFIER_assert__cond~0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0) (<= 100 main_~main__x~0) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__tmp_1~0 0) (= (ite (= 100 main_~main__y~0) 1 0) main_~__tmp_1~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= 0 main_~__tmp_1~0)) [2019-10-07 13:45:15,102 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 129#(and (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 0 ~__return_main~0) (= ~__return_main~0 0) (<= ~__return_720~0 0) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (<= 9 main_~main__x~0)) [2019-10-07 13:45:15,102 INFO L193 IcfgInterpreter]: Reachable states at location L202 satisfy 43#(and (<= main_~main__y~0 50) (= 1 main_~main__x~0) (<= 0 ~__return_720~0) (= |old(~__return_720~0)| 0) (<= 50 main_~main__y~0) (<= 0 |old(~__return_720~0)|) (<= 1 main_~main__x~0) (<= 0 ~__return_main~0) (<= main_~main__x~0 1) (<= |old(~__return_720~0)| 0) (<= ~__return_main~0 0) (= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (= ~__return_main~0 0) (<= ~__return_720~0 0)) [2019-10-07 13:45:19,049 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:45:19,049 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104, 15] total 272 [2019-10-07 13:45:19,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 272 states [2019-10-07 13:45:19,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 272 interpolants. [2019-10-07 13:45:19,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6705, Invalid=67007, Unknown=0, NotChecked=0, Total=73712 [2019-10-07 13:45:19,056 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 272 states. [2019-10-07 13:46:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:46:00,599 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2019-10-07 13:46:00,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-10-07 13:46:00,600 INFO L78 Accepts]: Start accepts. Automaton has 272 states. Word has length 108 [2019-10-07 13:46:00,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:46:00,600 INFO L225 Difference]: With dead ends: 111 [2019-10-07 13:46:00,601 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:46:00,605 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 107 SyntacticMatches, 50 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26300 ImplicationChecksByTransitivity, 137.6s TimeCoverageRelationStatistics Valid=12734, Invalid=127516, Unknown=0, NotChecked=0, Total=140250 [2019-10-07 13:46:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:46:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:46:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:46:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:46:00,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-10-07 13:46:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:46:00,606 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:46:00,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 272 states. [2019-10-07 13:46:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:46:00,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:46:00,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:46:00,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:46:01,061 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 531 [2019-10-07 13:46:04,779 WARN L191 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 534 DAG size of output: 325 [2019-10-07 13:46:04,813 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0)) [2019-10-07 13:46:04,813 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:46:04,813 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:46:04,813 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (= ~__return_main~0 0)) [2019-10-07 13:46:04,813 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:46:04,814 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:46:04,814 INFO L443 ceAbstractionStarter]: For program point L89(lines 89 98) no Hoare annotation was computed. [2019-10-07 13:46:04,814 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 209) no Hoare annotation was computed. [2019-10-07 13:46:04,814 INFO L439 ceAbstractionStarter]: At program point L118(lines 56 119) the Hoare annotation is: (or (and (= |old(~__return_720~0)| ~__return_720~0) (= 8 main_~main__x~0) (= 50 main_~main__y~0)) (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,816 INFO L439 ceAbstractionStarter]: At program point L106(lines 62 107) the Hoare annotation is: (let ((.cse1 (<= main_~main__y~0 50)) (.cse2 (<= 50 main_~main__y~0)) (.cse0 (= |old(~__return_720~0)| ~__return_720~0))) (or (and (<= 63 main_~main__x~0) (<= 63 main_~main__y~0) .cse0 (<= main_~main__y~0 63) (<= main_~main__x~0 63)) (and (<= main_~main__y~0 91) (<= 91 main_~main__y~0) (<= main_~main__x~0 91) (<= 91 main_~main__x~0) .cse0) (and (<= main_~main__y~0 81) (<= 81 main_~main__x~0) (<= 81 main_~main__y~0) (<= main_~main__x~0 81) .cse0) (and (<= 56 main_~main__x~0) (<= main_~main__y~0 56) (<= main_~main__x~0 56) (<= 56 main_~main__y~0) .cse0) (and (<= 74 main_~main__y~0) (<= 74 main_~main__x~0) (<= main_~main__y~0 74) .cse0 (<= main_~main__x~0 74)) (and (<= main_~main__y~0 90) (<= 90 main_~main__x~0) (<= 90 main_~main__y~0) .cse0 (<= main_~main__x~0 90)) (and (<= main_~main__x~0 61) (<= 61 main_~main__y~0) .cse0 (<= 61 main_~main__x~0) (<= main_~main__y~0 61)) (and (<= main_~main__x~0 79) (<= main_~main__y~0 79) (<= 79 main_~main__x~0) (<= 79 main_~main__y~0) .cse0) (and (<= 85 main_~main__y~0) (<= main_~main__x~0 85) (<= 85 main_~main__x~0) .cse0 (<= main_~main__y~0 85)) (and (<= 53 main_~main__y~0) (<= 53 main_~main__x~0) (<= main_~main__y~0 53) (<= main_~main__x~0 53) .cse0) (and (<= main_~main__y~0 66) (<= 66 main_~main__y~0) (<= 66 main_~main__x~0) (<= main_~main__x~0 66) .cse0) (and (<= main_~main__y~0 65) (<= 65 main_~main__x~0) .cse0 (<= 65 main_~main__y~0) (<= main_~main__x~0 65)) (and (<= main_~main__x~0 58) (<= main_~main__y~0 58) (<= 58 main_~main__x~0) .cse0 (<= 58 main_~main__y~0)) (and (<= 73 main_~main__x~0) (<= main_~main__y~0 73) (<= main_~main__x~0 73) .cse0 (<= 73 main_~main__y~0)) (and (<= main_~main__x~0 60) (<= 60 main_~main__x~0) .cse0 (<= 60 main_~main__y~0) (<= main_~main__y~0 60)) (and (<= 87 main_~main__x~0) (<= main_~main__y~0 87) (<= main_~main__x~0 87) (<= 87 main_~main__y~0) .cse0) (and (<= 55 main_~main__y~0) (<= 55 main_~main__x~0) (<= main_~main__x~0 55) .cse0 (<= main_~main__y~0 55)) (and (<= main_~main__y~0 72) (<= 72 main_~main__x~0) .cse0 (<= 72 main_~main__y~0) (<= main_~main__x~0 72)) (and (<= main_~main__x~0 57) (<= 57 main_~main__y~0) .cse0 (<= main_~main__y~0 57) (<= 57 main_~main__x~0)) (and (<= main_~main__y~0 59) (<= main_~main__x~0 59) (<= 59 main_~main__x~0) .cse0 (<= 59 main_~main__y~0)) (and (<= main_~main__y~0 97) (<= 97 main_~main__x~0) (< main_~main__x~0 98) .cse0 (<= 97 main_~main__y~0)) (and (<= 77 main_~main__x~0) (<= main_~main__y~0 77) .cse0 (<= 77 main_~main__y~0) (<= main_~main__x~0 77)) (and (<= main_~main__y~0 100) .cse0 (<= 100 main_~main__x~0) (<= main_~main__x~0 100) (<= 100 main_~main__y~0)) (and (<= main_~main__y~0 82) (<= 82 main_~main__y~0) (<= main_~main__x~0 82) (<= 82 main_~main__x~0) .cse0) (and (<= 51 main_~main__x~0) (<= 51 main_~main__y~0) (<= main_~main__x~0 51) .cse0 (<= main_~main__y~0 51)) (and (<= 95 main_~main__x~0) (<= 95 main_~main__y~0) .cse0 (<= main_~main__x~0 95) (<= main_~main__y~0 95)) (and (<= 75 main_~main__x~0) (<= main_~main__y~0 75) (<= 75 main_~main__y~0) (<= main_~main__x~0 75) .cse0) (not (<= |old(~__return_720~0)| 0)) (and (<= main_~main__y~0 67) (<= 67 main_~main__y~0) (<= main_~main__x~0 67) (<= 67 main_~main__x~0) .cse0) (and (<= main_~main__y~0 84) (<= main_~main__x~0 84) (<= 84 main_~main__y~0) .cse0 (<= 84 main_~main__x~0)) (and (<= 78 main_~main__y~0) (<= main_~main__x~0 78) .cse0 (<= main_~main__y~0 78) (<= 78 main_~main__x~0)) (not (= 0 ~__return_main~0)) (and .cse1 .cse0 .cse2 (<= main_~main__x~0 50) (<= 50 main_~main__x~0)) (and (<= main_~main__y~0 98) (<= 98 main_~main__y~0) .cse0 (<= main_~main__x~0 98) (<= 98 main_~main__x~0)) (and (<= main_~main__x~0 80) (<= main_~main__y~0 80) .cse0 (<= 80 main_~main__x~0) (<= 80 main_~main__y~0)) (not (<= 0 |old(~__return_720~0)|)) (and (<= 70 main_~main__x~0) (<= main_~main__y~0 70) .cse0 (<= main_~main__x~0 70) (<= 70 main_~main__y~0)) (and (<= 76 main_~main__x~0) (<= main_~main__x~0 76) (<= 76 main_~main__y~0) .cse0 (<= main_~main__y~0 76)) (and (<= main_~main__y~0 64) (<= main_~main__x~0 64) .cse0 (<= 64 main_~main__x~0) (<= 64 main_~main__y~0)) (and (<= 88 main_~main__x~0) (<= main_~main__x~0 88) .cse0 (<= main_~main__y~0 88) (<= 88 main_~main__y~0)) (and (<= 99 main_~main__x~0) (<= 99 main_~main__y~0) (<= main_~main__x~0 99) .cse0 (<= main_~main__y~0 99)) (and (<= 62 main_~main__y~0) (<= main_~main__y~0 62) .cse0 (<= 62 main_~main__x~0) (<= main_~main__x~0 62)) (and (<= main_~main__x~0 89) (<= 89 main_~main__x~0) (<= 89 main_~main__y~0) (<= main_~main__y~0 89) .cse0) (and (<= main_~main__y~0 68) (<= 68 main_~main__x~0) .cse0 (<= main_~main__x~0 68) (<= 68 main_~main__y~0)) (and (<= main_~main__y~0 71) (<= 71 main_~main__y~0) .cse0 (<= 71 main_~main__x~0) (<= main_~main__x~0 71)) (and (<= 96 main_~main__x~0) (< main_~main__x~0 97) (<= main_~main__y~0 96) .cse0 (<= 96 main_~main__y~0)) (and (<= main_~main__y~0 83) (<= main_~main__x~0 83) (<= 83 main_~main__x~0) .cse0 (<= 83 main_~main__y~0)) (and (<= main_~main__x~0 94) (<= 94 main_~main__x~0) .cse0 (<= main_~main__y~0 94) (<= 94 main_~main__y~0)) (and (<= main_~main__x~0 52) .cse0 (<= main_~main__y~0 52) (<= 52 main_~main__y~0) (<= 52 main_~main__x~0)) (and (<= 54 main_~main__x~0) (<= main_~main__y~0 54) (<= 54 main_~main__y~0) .cse0 (<= main_~main__x~0 54)) (and .cse1 .cse0 .cse2 (<= main_~main__x~0 49) (<= 9 main_~main__x~0)) (and (<= main_~main__x~0 93) .cse0 (<= main_~main__y~0 93) (<= 93 main_~main__y~0) (<= 93 main_~main__x~0)) (and (<= main_~main__y~0 69) (<= 69 main_~main__y~0) (<= 69 main_~main__x~0) (<= main_~main__x~0 69) .cse0) (and (<= main_~main__x~0 92) (<= 92 main_~main__x~0) .cse0 (<= main_~main__y~0 92) (<= 92 main_~main__y~0)) (and (<= 86 main_~main__x~0) (<= main_~main__x~0 86) (<= 86 main_~main__y~0) .cse0 (<= main_~main__y~0 86)))) [2019-10-07 13:46:04,816 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 208) no Hoare annotation was computed. [2019-10-07 13:46:04,816 INFO L439 ceAbstractionStarter]: At program point L202(lines 14 203) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (and (= |old(~__return_720~0)| ~__return_720~0) (<= 1 main_~main__x~0) (<= main_~main__x~0 1) (= 50 main_~main__y~0)) (not (<= 0 |old(~__return_720~0)|)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,816 INFO L439 ceAbstractionStarter]: At program point L190(lines 20 191) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (and (= |old(~__return_720~0)| ~__return_720~0) (= 50 main_~main__y~0) (= 2 main_~main__x~0)) (not (<= 0 |old(~__return_720~0)|)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,817 INFO L443 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2019-10-07 13:46:04,817 INFO L439 ceAbstractionStarter]: At program point L178(lines 26 179) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (and (= |old(~__return_720~0)| ~__return_720~0) (<= 3 main_~main__x~0) (<= main_~main__x~0 3) (= 50 main_~main__y~0)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,817 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 209) no Hoare annotation was computed. [2019-10-07 13:46:04,817 INFO L439 ceAbstractionStarter]: At program point L166(lines 32 167) the Hoare annotation is: (or (and (= |old(~__return_720~0)| ~__return_720~0) (= 4 main_~main__x~0) (= 50 main_~main__y~0)) (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,817 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 209) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (= |old(~__return_720~0)| ~__return_720~0) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,817 INFO L439 ceAbstractionStarter]: At program point L154(lines 38 155) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (and (= 5 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 50 main_~main__y~0)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,818 INFO L439 ceAbstractionStarter]: At program point L142(lines 44 143) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (and (= 6 main_~main__x~0) (= |old(~__return_720~0)| ~__return_720~0) (= 50 main_~main__y~0)) (not (<= 0 |old(~__return_720~0)|)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,818 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2019-10-07 13:46:04,818 INFO L439 ceAbstractionStarter]: At program point L130(lines 50 131) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_720~0)|)) (and (= |old(~__return_720~0)| ~__return_720~0) (= 7 main_~main__x~0) (= 50 main_~main__y~0)) (not (<= |old(~__return_720~0)| 0))) [2019-10-07 13:46:04,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:46:04 BoogieIcfgContainer [2019-10-07 13:46:04,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:46:04,857 INFO L168 Benchmark]: Toolchain (without parser) took 229492.21 ms. Allocated memory was 137.9 MB in the beginning and 303.0 MB in the end (delta: 165.2 MB). Free memory was 101.7 MB in the beginning and 57.1 MB in the end (delta: 44.6 MB). Peak memory consumption was 225.6 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,857 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.03 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 182.8 MB in the end (delta: -81.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,859 INFO L168 Benchmark]: Boogie Preprocessor took 43.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 181.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,859 INFO L168 Benchmark]: RCFGBuilder took 559.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 154.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,860 INFO L168 Benchmark]: TraceAbstraction took 228369.08 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 154.9 MB in the beginning and 57.1 MB in the end (delta: 97.8 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:46:04,863 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 515.03 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 182.8 MB in the end (delta: -81.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 181.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 154.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228369.08 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 154.9 MB in the beginning and 57.1 MB in the end (delta: 97.8 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 32]: Loop Invariant Derived loop invariant: ((((\old(__return_720) == __return_720 && 4 == main__x) && 50 == main__y) || !(0 == __return_main)) || !(0 <= \old(__return_720))) || !(\old(__return_720) <= 0) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((\old(__return_720) == __return_720 && 8 == main__x) && 50 == main__y) || !(0 == __return_main)) || !(0 <= \old(__return_720))) || !(\old(__return_720) <= 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || !(0 <= \old(__return_720))) || (((\old(__return_720) == __return_720 && 3 <= main__x) && main__x <= 3) && 50 == main__y)) || !(\old(__return_720) <= 0) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || !(0 <= \old(__return_720))) || ((\old(__return_720) == __return_720 && 7 == main__x) && 50 == main__y)) || !(\old(__return_720) <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || ((\old(__return_720) == __return_720 && 50 == main__y) && 2 == main__x)) || !(0 <= \old(__return_720))) || !(\old(__return_720) <= 0) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || ((6 == main__x && \old(__return_720) == __return_720) && 50 == main__y)) || !(0 <= \old(__return_720))) || !(\old(__return_720) <= 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || (((\old(__return_720) == __return_720 && 1 <= main__x) && main__x <= 1) && 50 == main__y)) || !(0 <= \old(__return_720))) || !(\old(__return_720) <= 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((!(0 == __return_main) || !(0 <= \old(__return_720))) || ((5 == main__x && \old(__return_720) == __return_720) && 50 == main__y)) || !(\old(__return_720) <= 0) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((63 <= main__x && 63 <= main__y) && \old(__return_720) == __return_720) && main__y <= 63) && main__x <= 63) || ((((main__y <= 91 && 91 <= main__y) && main__x <= 91) && 91 <= main__x) && \old(__return_720) == __return_720)) || ((((main__y <= 81 && 81 <= main__x) && 81 <= main__y) && main__x <= 81) && \old(__return_720) == __return_720)) || ((((56 <= main__x && main__y <= 56) && main__x <= 56) && 56 <= main__y) && \old(__return_720) == __return_720)) || ((((74 <= main__y && 74 <= main__x) && main__y <= 74) && \old(__return_720) == __return_720) && main__x <= 74)) || ((((main__y <= 90 && 90 <= main__x) && 90 <= main__y) && \old(__return_720) == __return_720) && main__x <= 90)) || ((((main__x <= 61 && 61 <= main__y) && \old(__return_720) == __return_720) && 61 <= main__x) && main__y <= 61)) || ((((main__x <= 79 && main__y <= 79) && 79 <= main__x) && 79 <= main__y) && \old(__return_720) == __return_720)) || ((((85 <= main__y && main__x <= 85) && 85 <= main__x) && \old(__return_720) == __return_720) && main__y <= 85)) || ((((53 <= main__y && 53 <= main__x) && main__y <= 53) && main__x <= 53) && \old(__return_720) == __return_720)) || ((((main__y <= 66 && 66 <= main__y) && 66 <= main__x) && main__x <= 66) && \old(__return_720) == __return_720)) || ((((main__y <= 65 && 65 <= main__x) && \old(__return_720) == __return_720) && 65 <= main__y) && main__x <= 65)) || ((((main__x <= 58 && main__y <= 58) && 58 <= main__x) && \old(__return_720) == __return_720) && 58 <= main__y)) || ((((73 <= main__x && main__y <= 73) && main__x <= 73) && \old(__return_720) == __return_720) && 73 <= main__y)) || ((((main__x <= 60 && 60 <= main__x) && \old(__return_720) == __return_720) && 60 <= main__y) && main__y <= 60)) || ((((87 <= main__x && main__y <= 87) && main__x <= 87) && 87 <= main__y) && \old(__return_720) == __return_720)) || ((((55 <= main__y && 55 <= main__x) && main__x <= 55) && \old(__return_720) == __return_720) && main__y <= 55)) || ((((main__y <= 72 && 72 <= main__x) && \old(__return_720) == __return_720) && 72 <= main__y) && main__x <= 72)) || ((((main__x <= 57 && 57 <= main__y) && \old(__return_720) == __return_720) && main__y <= 57) && 57 <= main__x)) || ((((main__y <= 59 && main__x <= 59) && 59 <= main__x) && \old(__return_720) == __return_720) && 59 <= main__y)) || ((((main__y <= 97 && 97 <= main__x) && main__x < 98) && \old(__return_720) == __return_720) && 97 <= main__y)) || ((((77 <= main__x && main__y <= 77) && \old(__return_720) == __return_720) && 77 <= main__y) && main__x <= 77)) || ((((main__y <= 100 && \old(__return_720) == __return_720) && 100 <= main__x) && main__x <= 100) && 100 <= main__y)) || ((((main__y <= 82 && 82 <= main__y) && main__x <= 82) && 82 <= main__x) && \old(__return_720) == __return_720)) || ((((51 <= main__x && 51 <= main__y) && main__x <= 51) && \old(__return_720) == __return_720) && main__y <= 51)) || ((((95 <= main__x && 95 <= main__y) && \old(__return_720) == __return_720) && main__x <= 95) && main__y <= 95)) || ((((75 <= main__x && main__y <= 75) && 75 <= main__y) && main__x <= 75) && \old(__return_720) == __return_720)) || !(\old(__return_720) <= 0)) || ((((main__y <= 67 && 67 <= main__y) && main__x <= 67) && 67 <= main__x) && \old(__return_720) == __return_720)) || ((((main__y <= 84 && main__x <= 84) && 84 <= main__y) && \old(__return_720) == __return_720) && 84 <= main__x)) || ((((78 <= main__y && main__x <= 78) && \old(__return_720) == __return_720) && main__y <= 78) && 78 <= main__x)) || !(0 == __return_main)) || ((((main__y <= 50 && \old(__return_720) == __return_720) && 50 <= main__y) && main__x <= 50) && 50 <= main__x)) || ((((main__y <= 98 && 98 <= main__y) && \old(__return_720) == __return_720) && main__x <= 98) && 98 <= main__x)) || ((((main__x <= 80 && main__y <= 80) && \old(__return_720) == __return_720) && 80 <= main__x) && 80 <= main__y)) || !(0 <= \old(__return_720))) || ((((70 <= main__x && main__y <= 70) && \old(__return_720) == __return_720) && main__x <= 70) && 70 <= main__y)) || ((((76 <= main__x && main__x <= 76) && 76 <= main__y) && \old(__return_720) == __return_720) && main__y <= 76)) || ((((main__y <= 64 && main__x <= 64) && \old(__return_720) == __return_720) && 64 <= main__x) && 64 <= main__y)) || ((((88 <= main__x && main__x <= 88) && \old(__return_720) == __return_720) && main__y <= 88) && 88 <= main__y)) || ((((99 <= main__x && 99 <= main__y) && main__x <= 99) && \old(__return_720) == __return_720) && main__y <= 99)) || ((((62 <= main__y && main__y <= 62) && \old(__return_720) == __return_720) && 62 <= main__x) && main__x <= 62)) || ((((main__x <= 89 && 89 <= main__x) && 89 <= main__y) && main__y <= 89) && \old(__return_720) == __return_720)) || ((((main__y <= 68 && 68 <= main__x) && \old(__return_720) == __return_720) && main__x <= 68) && 68 <= main__y)) || ((((main__y <= 71 && 71 <= main__y) && \old(__return_720) == __return_720) && 71 <= main__x) && main__x <= 71)) || ((((96 <= main__x && main__x < 97) && main__y <= 96) && \old(__return_720) == __return_720) && 96 <= main__y)) || ((((main__y <= 83 && main__x <= 83) && 83 <= main__x) && \old(__return_720) == __return_720) && 83 <= main__y)) || ((((main__x <= 94 && 94 <= main__x) && \old(__return_720) == __return_720) && main__y <= 94) && 94 <= main__y)) || ((((main__x <= 52 && \old(__return_720) == __return_720) && main__y <= 52) && 52 <= main__y) && 52 <= main__x)) || ((((54 <= main__x && main__y <= 54) && 54 <= main__y) && \old(__return_720) == __return_720) && main__x <= 54)) || ((((main__y <= 50 && \old(__return_720) == __return_720) && 50 <= main__y) && main__x <= 49) && 9 <= main__x)) || ((((main__x <= 93 && \old(__return_720) == __return_720) && main__y <= 93) && 93 <= main__y) && 93 <= main__x)) || ((((main__y <= 69 && 69 <= main__y) && 69 <= main__x) && main__x <= 69) && \old(__return_720) == __return_720)) || ((((main__x <= 92 && 92 <= main__x) && \old(__return_720) == __return_720) && main__y <= 92) && 92 <= main__y)) || ((((86 <= main__x && main__x <= 86) && 86 <= main__y) && \old(__return_720) == __return_720) && main__y <= 86) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Result: SAFE, OverallTime: 228.2s, OverallIterations: 6, TraceHistogramMax: 91, AutomataDifference: 68.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, HoareTripleCheckerStatistics: 41 SDtfs, 75 SDslu, 819 SDs, 0 SdLazy, 22334 SolverSat, 3502 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1612 GetRequests, 316 SyntacticMatches, 223 SemanticMatches, 1073 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60156 ImplicationChecksByTransitivity, 191.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 105 NumberOfFragments, 1069 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 2702 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 142.9s InterpolantComputationTime, 641 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 937 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927289 SizeOfPredicates, 16 NumberOfNonLiveVariables, 709 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/25908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1397, ICFG_INTERPRETER_ENTERED_PROCEDURES: 15, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 140, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 95, TOOLS_POST_TIME[ms]: 71, TOOLS_POST_CALL_APPLICATIONS: 20, TOOLS_POST_CALL_TIME[ms]: 12, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME[ms]: 4, TOOLS_QUANTIFIERELIM_APPLICATIONS: 125, TOOLS_QUANTIFIERELIM_TIME[ms]: 57, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 4, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 160, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 130, DOMAIN_JOIN_TIME[ms]: 899, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 15, DOMAIN_WIDEN_TIME[ms]: 191, DOMAIN_ISSUBSETEQ_APPLICATIONS: 20, DOMAIN_ISSUBSETEQ_TIME[ms]: 30, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 22, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 513, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 512, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 20, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME[ms]: 51, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 51, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 36, DAG_COMPRESSION_PROCESSED_NODES: 695, DAG_COMPRESSION_RETAINED_NODES: 250, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...