/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:01:47,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:01:47,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:01:47,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:01:47,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:01:47,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:01:47,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:01:47,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:01:47,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:01:47,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:01:47,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:01:47,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:01:47,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:01:47,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:01:47,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:01:47,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:01:47,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:01:47,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:01:47,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:01:47,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:01:47,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:01:47,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:01:47,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:01:47,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:01:47,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:01:47,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:01:47,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:01:47,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:01:47,552 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 [2019-11-07 04:01:47,572 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:01:47,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:01:47,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:01:47,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:01:47,574 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:01:47,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:01:47,575 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:01:47,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:01:47,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:01:47,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:01:47,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:01:47,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:01:47,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:01:47,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:01:47,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:01:47,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:01:47,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:01:47,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:01:47,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:01:47,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:01:47,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:01:47,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:01:47,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:01:47,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:01:47,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:01:47,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:01:47,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:01:47,893 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:01:47,893 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:01:47,894 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2019-11-07 04:01:47,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27a238d/a7d025e5fd004e689167a52b82332fb0/FLAG9c8a90be2 [2019-11-07 04:01:48,439 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:01:48,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2019-11-07 04:01:48,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27a238d/a7d025e5fd004e689167a52b82332fb0/FLAG9c8a90be2 [2019-11-07 04:01:48,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27a238d/a7d025e5fd004e689167a52b82332fb0 [2019-11-07 04:01:48,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:01:48,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:01:48,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:48,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:01:48,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:01:48,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:48" (1/1) ... [2019-11-07 04:01:48,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbfcd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:48, skipping insertion in model container [2019-11-07 04:01:48,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:48" (1/1) ... [2019-11-07 04:01:48,948 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:01:48,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:01:49,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:49,359 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:01:49,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:49,398 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:01:49,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49 WrapperNode [2019-11-07 04:01:49,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:49,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:01:49,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:01:49,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:01:49,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (1/1) ... [2019-11-07 04:01:49,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:01:49,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:01:49,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:01:49,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:01:49,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (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 [2019-11-07 04:01:49,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:01:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:01:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:01:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:01:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:01:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:01:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:01:49,865 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:01:49,865 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:01:49,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:49 BoogieIcfgContainer [2019-11-07 04:01:49,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:01:49,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:01:49,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:01:49,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:01:49,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:01:48" (1/3) ... [2019-11-07 04:01:49,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cca50c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:49, skipping insertion in model container [2019-11-07 04:01:49,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:49" (2/3) ... [2019-11-07 04:01:49,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cca50c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:49, skipping insertion in model container [2019-11-07 04:01:49,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:49" (3/3) ... [2019-11-07 04:01:49,891 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-11-07 04:01:49,903 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:01:49,931 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:01:49,947 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:01:49,976 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:01:49,976 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:01:49,976 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:01:49,976 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:01:49,977 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:01:49,977 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:01:49,977 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:01:49,977 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:01:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-07 04:01:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:01:50,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:50,002 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:50,005 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1985007014, now seen corresponding path program 1 times [2019-11-07 04:01:50,022 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:50,023 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663045409] [2019-11-07 04:01:50,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:50,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663045409] [2019-11-07 04:01:50,225 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:50,225 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:01:50,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051853844] [2019-11-07 04:01:50,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:01:50,236 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:50,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:01:50,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:01:50,253 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-11-07 04:01:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:50,335 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-11-07 04:01:50,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:01:50,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:01:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:50,346 INFO L225 Difference]: With dead ends: 38 [2019-11-07 04:01:50,347 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 04:01:50,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:01:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 04:01:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-07 04:01:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 04:01:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-07 04:01:50,388 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2019-11-07 04:01:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:50,388 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-07 04:01:50,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:01:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-07 04:01:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:01:50,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:50,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:50,390 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1314726279, now seen corresponding path program 1 times [2019-11-07 04:01:50,391 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:50,392 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651549467] [2019-11-07 04:01:50,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:50,458 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651549467] [2019-11-07 04:01:50,458 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798114272] [2019-11-07 04:01:50,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:50,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:01:50,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:50,607 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:50,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:01:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:50,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947394212] [2019-11-07 04:01:50,681 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-07 04:01:50,681 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:50,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:50,694 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:50,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:50,748 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:01:50,922 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2019-11-07 04:01:50,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:01:50,929 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:51,005 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 04:01:51,006 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 13 [2019-11-07 04:01:51,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477705974] [2019-11-07 04:01:51,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:01:51,010 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:01:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:01:51,011 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2019-11-07 04:01:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:51,081 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-07 04:01:51,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:01:51,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-07 04:01:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:51,085 INFO L225 Difference]: With dead ends: 26 [2019-11-07 04:01:51,086 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 04:01:51,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:01:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 04:01:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2019-11-07 04:01:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 04:01:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-07 04:01:51,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2019-11-07 04:01:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:51,110 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-07 04:01:51,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:01:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-07 04:01:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 04:01:51,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:51,113 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:51,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:51,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 723289379, now seen corresponding path program 1 times [2019-11-07 04:01:51,319 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:51,325 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539713428] [2019-11-07 04:01:51,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:51,398 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539713428] [2019-11-07 04:01:51,398 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:51,398 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:01:51,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414609051] [2019-11-07 04:01:51,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:01:51,399 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:51,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:01:51,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:01:51,400 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2019-11-07 04:01:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:51,485 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-07 04:01:51,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:01:51,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-07 04:01:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:51,486 INFO L225 Difference]: With dead ends: 27 [2019-11-07 04:01:51,487 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 04:01:51,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:01:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 04:01:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 04:01:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 04:01:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-07 04:01:51,492 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2019-11-07 04:01:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:51,493 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-07 04:01:51,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:01:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-07 04:01:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:01:51,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:51,494 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:51,494 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:51,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1183148956, now seen corresponding path program 1 times [2019-11-07 04:01:51,495 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:51,495 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102485288] [2019-11-07 04:01:51,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:51,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102485288] [2019-11-07 04:01:51,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266386844] [2019-11-07 04:01:51,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:51,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-07 04:01:51,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:51,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:51,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737098715] [2019-11-07 04:01:51,812 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-07 04:01:51,812 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:51,812 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:51,813 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:51,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:51,823 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:01:51,970 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:01:51,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:01:51,981 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:52,151 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:52,152 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6, 7] total 20 [2019-11-07 04:01:52,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336137847] [2019-11-07 04:01:52,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 04:01:52,153 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 04:01:52,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:01:52,155 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 20 states. [2019-11-07 04:01:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:52,389 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-11-07 04:01:52,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:01:52,390 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2019-11-07 04:01:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:52,390 INFO L225 Difference]: With dead ends: 20 [2019-11-07 04:01:52,391 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:01:52,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2019-11-07 04:01:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:01:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:01:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:01:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:01:52,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-07 04:01:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:52,393 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:01:52,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 04:01:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:01:52,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:01:52,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:52,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:01:52,856 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:01:52,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:52,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:52,857 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:01:52,857 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:01:52,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:01:52,857 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-11-07 04:01:52,857 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-11-07 04:01:52,858 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-07 04:01:52,858 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 (+ main_~n~0 2147483648))) (.cse2 (<= main_~n~0 main_~x~0))) (or (and .cse0 .cse1 (<= main_~x~0 0) .cse2 (<= 0 main_~x~0)) (and (<= main_~n~0 2147483647) .cse0 (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) .cse1 .cse2 (< main_~m~0 (+ main_~x~0 1))))) [2019-11-07 04:01:52,858 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 (+ main_~n~0 2147483648)) (< main_~m~0 (+ main_~x~0 1))) [2019-11-07 04:01:52,858 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 (+ main_~n~0 2147483648))) (.cse2 (<= main_~n~0 main_~x~0))) (or (and .cse0 .cse1 .cse2 (<= main_~x~0 0) (<= 0 main_~x~0)) (and (<= main_~n~0 2147483647) .cse0 (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) .cse1 .cse2 (< main_~m~0 (+ main_~x~0 1))))) [2019-11-07 04:01:52,859 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:01:52,859 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:01:52,859 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:01:52,859 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:01:52,859 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:01:52,859 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:01:52,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:01:52 BoogieIcfgContainer [2019-11-07 04:01:52,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:01:52,879 INFO L168 Benchmark]: Toolchain (without parser) took 3969.25 ms. Allocated memory was 145.2 MB in the beginning and 244.8 MB in the end (delta: 99.6 MB). Free memory was 101.6 MB in the beginning and 205.7 MB in the end (delta: -104.0 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:52,880 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 04:01:52,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.65 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:52,882 INFO L168 Benchmark]: Boogie Preprocessor took 158.03 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.0 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:52,883 INFO L168 Benchmark]: RCFGBuilder took 313.05 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:52,884 INFO L168 Benchmark]: TraceAbstraction took 3004.51 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 168.4 MB in the beginning and 205.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:52,888 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 482.65 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.03 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.0 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.05 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3004.51 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 168.4 MB in the beginning and 205.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 118.8 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: 14]: Loop Invariant Derived loop invariant: (((n <= 2147483647 && 0 <= m) && (n <= 0 || m < n)) && 0 <= n + 2147483648) && m < x + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 47 SDtfs, 37 SDslu, 170 SDs, 0 SdLazy, 126 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 121 HoareAnnotationTreeSize, 14 FomulaSimplifications, 227 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 139 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3392 SizeOfPredicates, 9 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 7/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 419, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 23, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME[ms]: 45, TOOLS_POST_CALL_APPLICATIONS: 13, TOOLS_POST_CALL_TIME[ms]: 27, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_APPLICATIONS: 43, TOOLS_QUANTIFIERELIM_TIME[ms]: 63, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 8, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 88, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME[ms]: 51, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 149, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 31, DOMAIN_ISBOTTOM_APPLICATIONS: 23, DOMAIN_ISBOTTOM_TIME[ms]: 31, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 222, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 221, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME[ms]: 8, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 8, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 17, DAG_COMPRESSION_PROCESSED_NODES: 140, DAG_COMPRESSION_RETAINED_NODES: 93, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...