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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:31,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:31,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:31,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:31,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:31,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:31,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:31,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:31,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:31,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:31,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:31,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:31,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:31,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:31,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:31,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:31,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:31,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:31,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:31,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:31,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:31,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:31,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:31,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:31,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 12:58:31,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 12:58:31,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 12:58:31,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 12:58:31,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 12:58:31,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 12:58:31,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 12:58:31,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 12:58:31,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 12:58:31,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 12:58:31,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 12:58:31,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 12:58:31,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 12:58:31,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 12:58:31,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:31,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:31,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:31,424 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 [2019-09-20 12:58:31,439 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:31,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:31,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:31,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:31,441 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:31,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:31,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:31,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:31,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:31,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:31,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:31,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:31,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:31,443 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:31,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:31,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:31,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:31,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:31,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:31,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:31,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:31,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:31,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:31,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:31,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:31,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:31,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:31,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:31,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:31,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:31,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:31,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:31,510 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:31,510 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:31,511 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2019-09-20 12:58:31,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2d9794/d7fd41f026f441a5b825e507930d13d9/FLAG685211821 [2019-09-20 12:58:32,019 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:32,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2019-09-20 12:58:32,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2d9794/d7fd41f026f441a5b825e507930d13d9/FLAG685211821 [2019-09-20 12:58:32,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2d9794/d7fd41f026f441a5b825e507930d13d9 [2019-09-20 12:58:32,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:32,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:32,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:32,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:32,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:32,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f458dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32, skipping insertion in model container [2019-09-20 12:58:32,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:32,521 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:32,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:32,735 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:32,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:32,766 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:32,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32 WrapperNode [2019-09-20 12:58:32,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:32,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:32,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:32,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:32,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (1/1) ... [2019-09-20 12:58:32,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:32,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:32,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:32,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:32,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (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 [2019-09-20 12:58:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:58:32,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:33,123 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:33,124 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:58:33,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:33 BoogieIcfgContainer [2019-09-20 12:58:33,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:33,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:33,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:33,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:33,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:32" (1/3) ... [2019-09-20 12:58:33,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79977886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:33, skipping insertion in model container [2019-09-20 12:58:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:32" (2/3) ... [2019-09-20 12:58:33,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79977886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:33, skipping insertion in model container [2019-09-20 12:58:33,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:33" (3/3) ... [2019-09-20 12:58:33,149 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2019-09-20 12:58:33,163 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:33,174 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:33,193 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:33,231 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:33,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:33,232 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:33,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:33,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:33,233 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:33,233 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:33,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:33,233 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-20 12:58:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 12:58:33,274 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:33,277 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:33,279 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1912775084, now seen corresponding path program 1 times [2019-09-20 12:58:33,287 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:33,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:33,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:33,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:33,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:33,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:33,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:58:33,411 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:58:33,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:58:33,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:33,428 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-20 12:58:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:33,448 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-09-20 12:58:33,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:58:33,449 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-20 12:58:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:33,456 INFO L225 Difference]: With dead ends: 33 [2019-09-20 12:58:33,457 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 12:58:33,460 INFO L636 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 [2019-09-20 12:58:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 12:58:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 12:58:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 12:58:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 12:58:33,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2019-09-20 12:58:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:33,496 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 12:58:33,496 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:58:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 12:58:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 12:58:33,497 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:33,498 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:33,498 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2027291688, now seen corresponding path program 1 times [2019-09-20 12:58:33,499 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:33,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:33,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:33,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:33,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:33,809 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2019-09-20 12:58:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:33,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:33,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 12:58:33,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 12:58:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 12:58:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 12:58:33,949 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2019-09-20 12:58:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:34,116 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-09-20 12:58:34,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 12:58:34,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-09-20 12:58:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:34,118 INFO L225 Difference]: With dead ends: 20 [2019-09-20 12:58:34,118 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 12:58:34,119 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-20 12:58:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 12:58:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 12:58:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 12:58:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 12:58:34,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-20 12:58:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:34,125 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 12:58:34,125 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 12:58:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 12:58:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 12:58:34,126 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:34,126 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:34,127 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1190399537, now seen corresponding path program 1 times [2019-09-20 12:58:34,128 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:34,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:34,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:34,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:34,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:34,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:34,346 INFO L224 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:58:34,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:34,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-20 12:58:34,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:34,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:34,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:34,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-09-20 12:58:34,558 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-20 12:58:34,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-20 12:58:34,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-20 12:58:34,559 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2019-09-20 12:58:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:34,694 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-09-20 12:58:34,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 12:58:34,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-09-20 12:58:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:34,695 INFO L225 Difference]: With dead ends: 21 [2019-09-20 12:58:34,695 INFO L226 Difference]: Without dead ends: 15 [2019-09-20 12:58:34,696 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 12:58:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-20 12:58:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-20 12:58:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-20 12:58:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-09-20 12:58:34,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2019-09-20 12:58:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:34,701 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-09-20 12:58:34,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-20 12:58:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-09-20 12:58:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 12:58:34,702 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:34,702 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:34,702 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1016546632, now seen corresponding path program 2 times [2019-09-20 12:58:34,703 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:34,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:34,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:34,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:34,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:34,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:34,935 INFO L224 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:58:34,953 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:34,973 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 12:58:34,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 12:58:34,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-20 12:58:34,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:35,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:35,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:35,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-09-20 12:58:35,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 12:58:35,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 12:58:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-09-20 12:58:35,071 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2019-09-20 12:58:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:35,242 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-09-20 12:58:35,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-20 12:58:35,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2019-09-20 12:58:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:35,243 INFO L225 Difference]: With dead ends: 25 [2019-09-20 12:58:35,243 INFO L226 Difference]: Without dead ends: 17 [2019-09-20 12:58:35,244 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-09-20 12:58:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-20 12:58:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-20 12:58:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 12:58:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-09-20 12:58:35,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2019-09-20 12:58:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:35,249 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-09-20 12:58:35,249 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 12:58:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-09-20 12:58:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 12:58:35,250 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:35,251 INFO L407 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:35,251 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash -353156712, now seen corresponding path program 3 times [2019-09-20 12:58:35,251 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:35,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:35,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:35,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 12:58:35,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 12:58:35,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:35,438 INFO L224 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 -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:58:35,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:35,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-20 12:58:35,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 12:58:35,476 WARN L254 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-20 12:58:35,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:35,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:35,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:35,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2019-09-20 12:58:35,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 12:58:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 12:58:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-09-20 12:58:35,683 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2019-09-20 12:58:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:35,883 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-20 12:58:35,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-20 12:58:35,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2019-09-20 12:58:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:35,883 INFO L225 Difference]: With dead ends: 20 [2019-09-20 12:58:35,884 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:35,884 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2019-09-20 12:58:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:35,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 12:58:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:35,886 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:35,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 12:58:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:35,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:35,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:35,977 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:58:35,977 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:35,978 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:35,978 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:35,978 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:35,978 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:35,978 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2019-09-20 12:58:35,978 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2019-09-20 12:58:35,979 INFO L439 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 0)) [2019-09-20 12:58:35,979 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-09-20 12:58:35,979 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-09-20 12:58:35,979 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-09-20 12:58:35,979 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2019-09-20 12:58:35,979 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2019-09-20 12:58:35,979 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-20 12:58:35,979 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:35,980 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-20 12:58:35,980 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-20 12:58:35,980 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:58:35,980 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:35,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:35 BoogieIcfgContainer [2019-09-20 12:58:35,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:35,995 INFO L168 Benchmark]: Toolchain (without parser) took 3513.01 ms. Allocated memory was 139.5 MB in the beginning and 262.7 MB in the end (delta: 123.2 MB). Free memory was 86.7 MB in the beginning and 195.5 MB in the end (delta: -108.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:35,996 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:35,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.37 ms. Allocated memory is still 139.5 MB. Free memory was 86.5 MB in the beginning and 77.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:35,998 INFO L168 Benchmark]: Boogie Preprocessor took 114.13 ms. Allocated memory was 139.5 MB in the beginning and 198.2 MB in the end (delta: 58.7 MB). Free memory was 77.3 MB in the beginning and 175.8 MB in the end (delta: -98.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:35,999 INFO L168 Benchmark]: RCFGBuilder took 243.34 ms. Allocated memory is still 198.2 MB. Free memory was 175.8 MB in the beginning and 163.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:36,000 INFO L168 Benchmark]: TraceAbstraction took 2860.18 ms. Allocated memory was 198.2 MB in the beginning and 262.7 MB in the end (delta: 64.5 MB). Free memory was 163.4 MB in the beginning and 195.5 MB in the end (delta: -32.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:36,004 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.37 ms. Allocated memory is still 139.5 MB. Free memory was 86.5 MB in the beginning and 77.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.13 ms. Allocated memory was 139.5 MB in the beginning and 198.2 MB in the end (delta: 58.7 MB). Free memory was 77.3 MB in the beginning and 175.8 MB in the end (delta: -98.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 243.34 ms. Allocated memory is still 198.2 MB. Free memory was 175.8 MB in the beginning and 163.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2860.18 ms. Allocated memory was 198.2 MB in the beginning and 262.7 MB in the end (delta: 64.5 MB). Free memory was 163.4 MB in the beginning and 195.5 MB in the end (delta: -32.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 27 SDslu, 220 SDs, 0 SdLazy, 236 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 27 HoareAnnotationTreeSize, 13 FomulaSimplifications, 115 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 8230 SizeOfPredicates, 15 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...