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 -i ../../../trunk/examples/svcomp/nla-digbench/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:18:58,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:18:58,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:18:58,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:18:58,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:18:58,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:18:58,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:18:58,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:18:58,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:18:58,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:18:58,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:18:58,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:18:58,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:18:58,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:18:58,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:18:58,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:18:58,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:18:58,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:18:58,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:18:58,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:18:58,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:18:58,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:18:58,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:18:58,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:18:58,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:18:58,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:18:58,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:18:58,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:18:58,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:18:58,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:18:58,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:18:58,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:18:58,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:18:58,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:18:58,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:18:58,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:18:58,141 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 [2019-09-03 20:18:58,162 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:18:58,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:18:58,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:18:58,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:18:58,164 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:18:58,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:18:58,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:18:58,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:18:58,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:18:58,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:18:58,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:18:58,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:18:58,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:18:58,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:18:58,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:18:58,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:18:58,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:18:58,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:18:58,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:18:58,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:18:58,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:18:58,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:18:58,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:18:58,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:18:58,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:18:58,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:18:58,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:18:58,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:18:58,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:18:58,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:18:58,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:18:58,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:18:58,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:18:58,228 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:18:58,228 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-03 20:18:58,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d56d2f3/45332b71091f45ffafa58d866cc4d8b7/FLAG2e23d79e2 [2019-09-03 20:18:58,705 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:18:58,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2019-09-03 20:18:58,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d56d2f3/45332b71091f45ffafa58d866cc4d8b7/FLAG2e23d79e2 [2019-09-03 20:18:59,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d56d2f3/45332b71091f45ffafa58d866cc4d8b7 [2019-09-03 20:18:59,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:18:59,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:18:59,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:18:59,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:18:59,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:18:59,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a14d8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59, skipping insertion in model container [2019-09-03 20:18:59,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,122 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:18:59,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:18:59,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:18:59,311 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:18:59,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:18:59,343 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:18:59,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59 WrapperNode [2019-09-03 20:18:59,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:18:59,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:18:59,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:18:59,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:18:59,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (1/1) ... [2019-09-03 20:18:59,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:18:59,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:18:59,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:18:59,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:18:59,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (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 [2019-09-03 20:18:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:18:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:18:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:18:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:18:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:18:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:18:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:18:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:18:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:18:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:18:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:18:59,667 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:18:59,667 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:18:59,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:18:59 BoogieIcfgContainer [2019-09-03 20:18:59,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:18:59,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:18:59,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:18:59,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:18:59,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:18:59" (1/3) ... [2019-09-03 20:18:59,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0276cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:18:59, skipping insertion in model container [2019-09-03 20:18:59,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:59" (2/3) ... [2019-09-03 20:18:59,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0276cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:18:59, skipping insertion in model container [2019-09-03 20:18:59,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:18:59" (3/3) ... [2019-09-03 20:18:59,676 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2019-09-03 20:18:59,686 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:18:59,693 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:18:59,711 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:18:59,746 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:18:59,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:18:59,748 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:18:59,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:18:59,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:18:59,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:18:59,749 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:18:59,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:18:59,749 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:18:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-03 20:18:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:18:59,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:18:59,779 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:18:59,781 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:18:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:18:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-03 20:18:59,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:18:59,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:18:59,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:59,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:18:59,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:18:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:18:59,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:18:59,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:18:59,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:18:59,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:18:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:18:59,915 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-03 20:18:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:18:59,934 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-03 20:18:59,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:18:59,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 20:18:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:18:59,942 INFO L225 Difference]: With dead ends: 35 [2019-09-03 20:18:59,943 INFO L226 Difference]: Without dead ends: 15 [2019-09-03 20:18:59,945 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:18:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-03 20:18:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-03 20:18:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-03 20:18:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-03 20:18:59,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-03 20:18:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:18:59,982 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-03 20:18:59,982 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:18:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-03 20:18:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:18:59,984 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:18:59,984 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:18:59,984 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:18:59,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:18:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-03 20:18:59,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:18:59,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:18:59,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:59,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:18:59,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:59,993 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:18:59,993 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:18:59,993 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-03 20:19:00,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:00,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-03 20:19:00,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 20:19:00,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:00,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:19:00,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:19:00,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:19:00,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:19:00,094 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-03 20:19:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:00,167 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-03 20:19:00,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:19:00,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 20:19:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:00,168 INFO L225 Difference]: With dead ends: 25 [2019-09-03 20:19:00,169 INFO L226 Difference]: Without dead ends: 22 [2019-09-03 20:19:00,170 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-03 20:19:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-03 20:19:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-03 20:19:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-03 20:19:00,181 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-03 20:19:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:00,181 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-03 20:19:00,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:19:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-03 20:19:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 20:19:00,182 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:00,183 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:00,183 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-03 20:19:00,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:00,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:00,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:00,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,198 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:00,198 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:00,198 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-03 20:19:00,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:00,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-03 20:19:00,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:00,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:19:00,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:00,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-03 20:19:00,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 20:19:00,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 20:19:00,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:19:00,409 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2019-09-03 20:19:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:00,551 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-09-03 20:19:00,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 20:19:00,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-09-03 20:19:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:00,554 INFO L225 Difference]: With dead ends: 32 [2019-09-03 20:19:00,555 INFO L226 Difference]: Without dead ends: 29 [2019-09-03 20:19:00,556 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:19:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-03 20:19:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-03 20:19:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-03 20:19:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-09-03 20:19:00,572 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-09-03 20:19:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:00,573 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-09-03 20:19:00,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 20:19:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-09-03 20:19:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-03 20:19:00,575 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:00,575 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:00,575 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:00,576 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-09-03 20:19:00,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:00,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:00,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:00,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,591 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:00,592 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:00,592 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-03 20:19:00,610 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:19:00,631 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:19:00,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:00,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-03 20:19:00,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:00,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 20:19:00,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:00,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-09-03 20:19:00,786 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 20:19:00,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 20:19:00,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-03 20:19:00,788 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2019-09-03 20:19:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:00,967 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-09-03 20:19:00,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 20:19:00,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-09-03 20:19:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:00,969 INFO L225 Difference]: With dead ends: 39 [2019-09-03 20:19:00,970 INFO L226 Difference]: Without dead ends: 36 [2019-09-03 20:19:00,970 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-09-03 20:19:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-03 20:19:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-03 20:19:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-03 20:19:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-03 20:19:00,979 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-09-03 20:19:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:00,979 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-03 20:19:00,979 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 20:19:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-03 20:19:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-03 20:19:00,981 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:00,981 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:00,981 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:00,982 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-09-03 20:19:00,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:00,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:00,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:19:00,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:00,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:00,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:00,987 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-03 20:19:01,010 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 20:19:01,023 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-03 20:19:01,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:01,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-03 20:19:01,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:01,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-03 20:19:01,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:01,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-03 20:19:01,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-03 20:19:01,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-03 20:19:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:19:01,101 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2019-09-03 20:19:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:03,192 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-09-03 20:19:03,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:19:03,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-09-03 20:19:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:03,194 INFO L225 Difference]: With dead ends: 36 [2019-09-03 20:19:03,194 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:19:03,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:19:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:19:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:19:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:19:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:19:03,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-03 20:19:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:03,197 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:19:03,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-03 20:19:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:19:03,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:19:03,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 20:19:05,246 WARN L188 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-09-03 20:19:07,345 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-09-03 20:19:07,348 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 20:19:07,348 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:19:07,348 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:19:07,349 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 20:19:07,349 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:19:07,349 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:19:07,349 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2019-09-03 20:19:07,349 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-03 20:19:07,350 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2019-09-03 20:19:07,350 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-03 20:19:07,350 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 1) (= main_~y~0 1)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (+ (* v_main_~x~0_13 main_~z~0) 1)) (.cse1 (* v_main_~y~0_13 main_~z~0))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse1) (= (+ (+ (- v_main_~x~0_13) .cse0) (- .cse1)) 0))))) [2019-09-03 20:19:07,350 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 18 40) no Hoare annotation was computed. [2019-09-03 20:19:07,350 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 18 40) no Hoare annotation was computed. [2019-09-03 20:19:07,351 INFO L443 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2019-09-03 20:19:07,351 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-09-03 20:19:07,351 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-09-03 20:19:07,351 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-09-03 20:19:07,351 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-09-03 20:19:07,351 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-09-03 20:19:07,352 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-09-03 20:19:07,359 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,359 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,360 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,360 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,360 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,368 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:19:07 BoogieIcfgContainer [2019-09-03 20:19:07,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:19:07,374 INFO L168 Benchmark]: Toolchain (without parser) took 8266.78 ms. Allocated memory was 132.1 MB in the beginning and 221.8 MB in the end (delta: 89.7 MB). Free memory was 88.5 MB in the beginning and 145.7 MB in the end (delta: -57.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,375 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.93 ms. Allocated memory is still 132.1 MB. Free memory was 88.3 MB in the beginning and 78.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,377 INFO L168 Benchmark]: Boogie Preprocessor took 116.18 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.9 MB in the beginning and 175.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,378 INFO L168 Benchmark]: RCFGBuilder took 208.25 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 164.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,379 INFO L168 Benchmark]: TraceAbstraction took 7702.27 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 164.3 MB in the beginning and 145.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:07,383 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.93 ms. Allocated memory is still 132.1 MB. Free memory was 88.3 MB in the beginning and 78.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.18 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.9 MB in the beginning and 175.7 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 208.25 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 164.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7702.27 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 164.3 MB in the beginning and 145.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2019-09-03 20:19:07,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-03 20:19:07,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2019-09-03 20:19:07,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] Derived loop invariant: (x == 1 && y == 1) || (\exists v_main_~y~0_13 : int, v_main_~x~0_13 : int :: (x == v_main_~x~0_13 * z + 1 && y == v_main_~y~0_13 * z) && -v_main_~x~0_13 + (v_main_~x~0_13 * z + 1) + -(v_main_~y~0_13 * z) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 7.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 4.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 43 SDslu, 230 SDs, 0 SdLazy, 181 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 116 HoareAnnotationTreeSize, 17 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 9 QuantifiedInterpolants, 9177 SizeOfPredicates, 12 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 39/52 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...