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/loops/sum04-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:00:14,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:00:14,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:00:14,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:00:14,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:00:14,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:00:14,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:00:14,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:00:14,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:00:14,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:00:14,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:00:14,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:00:14,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:00:14,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:00:14,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:00:14,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:00:14,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:00:14,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:00:14,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:00:14,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:00:14,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:00:14,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:00:14,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:00:14,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:00:14,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:00:14,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:00:14,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:00:14,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:00:14,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:00:14,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:00:14,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:00:14,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:00:14,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:00:14,410 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:00:14,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:00:14,410 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:00:14,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:00:14,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:00:14,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:00:14,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:00:14,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:00:14,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:00:14,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:00:14,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:00:14,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:00:14,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:00:14,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:00:14,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:00:14,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:00:14,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:00:14,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:14,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:00:14,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:00:14,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:00:14,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:00:14,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:00:14,709 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:00:14,709 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:00:14,710 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-2.i [2019-10-13 23:00:14,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7153f7cc8/f8fc2b0b51a94a57b4f9283aa972fbd9/FLAG6fab449a4 [2019-10-13 23:00:15,215 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:00:15,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i [2019-10-13 23:00:15,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7153f7cc8/f8fc2b0b51a94a57b4f9283aa972fbd9/FLAG6fab449a4 [2019-10-13 23:00:15,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7153f7cc8/f8fc2b0b51a94a57b4f9283aa972fbd9 [2019-10-13 23:00:15,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:00:15,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:00:15,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:15,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:00:15,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:00:15,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:15,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15161af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15, skipping insertion in model container [2019-10-13 23:00:15,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:15,646 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:00:15,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:00:15,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:15,912 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:00:15,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:15,942 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:00:15,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15 WrapperNode [2019-10-13 23:00:15,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:15,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:00:15,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:00:15,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:00:16,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... [2019-10-13 23:00:16,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:00:16,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:00:16,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:00:16,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:00:16,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:00:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:00:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:00:16,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:00:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:00:16,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:00:16,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:00:16,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:00:16,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:00:16,304 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:00:16,305 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 23:00:16,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:16 BoogieIcfgContainer [2019-10-13 23:00:16,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:00:16,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:00:16,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:00:16,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:00:16,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:00:15" (1/3) ... [2019-10-13 23:00:16,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441e083d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:16, skipping insertion in model container [2019-10-13 23:00:16,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:15" (2/3) ... [2019-10-13 23:00:16,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441e083d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:16, skipping insertion in model container [2019-10-13 23:00:16,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:16" (3/3) ... [2019-10-13 23:00:16,316 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2019-10-13 23:00:16,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:00:16,331 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:00:16,340 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:00:16,365 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:00:16,366 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:00:16,366 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:00:16,366 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:00:16,367 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:00:16,367 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:00:16,367 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:00:16,367 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:00:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-13 23:00:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:16,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:16,389 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:16,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash 9943896, now seen corresponding path program 1 times [2019-10-13 23:00:16,406 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:16,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338535294] [2019-10-13 23:00:16,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:16,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:16,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:16,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338535294] [2019-10-13 23:00:16,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:16,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:00:16,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203115131] [2019-10-13 23:00:16,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:00:16,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:16,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:00:16,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:00:16,560 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-13 23:00:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:16,595 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-13 23:00:16,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:00:16,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 23:00:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:16,605 INFO L225 Difference]: With dead ends: 29 [2019-10-13 23:00:16,605 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 23:00:16,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:00:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 23:00:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 23:00:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 23:00:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-13 23:00:16,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-13 23:00:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:16,649 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-13 23:00:16,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:00:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-13 23:00:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 23:00:16,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:16,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:16,651 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 282846133, now seen corresponding path program 1 times [2019-10-13 23:00:16,652 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:16,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369629662] [2019-10-13 23:00:16,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:16,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:16,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:16,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369629662] [2019-10-13 23:00:16,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484575477] [2019-10-13 23:00:16,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:16,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:00:16,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:16,906 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:16,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980953461] [2019-10-13 23:00:16,982 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-13 23:00:16,983 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:17,008 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:17,021 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:17,023 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:17,094 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:17,371 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:00:17,413 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:17,417 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:17,418 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:17,418 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:17,419 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:17,419 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#true [2019-10-13 23:00:17,419 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:17,420 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 100#true [2019-10-13 23:00:17,420 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 91#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:17,421 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-13 23:00:17,421 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 86#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 23:00:17,422 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 76#(and (<= 1 main_~i~0) (not (<= main_~i~0 8)) (<= 8 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:17,422 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:17,422 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (<= 1 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:17,627 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:00:17,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 6] total 11 [2019-10-13 23:00:17,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023086814] [2019-10-13 23:00:17,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:00:17,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:17,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:00:17,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:00:17,632 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2019-10-13 23:00:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:17,753 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-13 23:00:17,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:00:17,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2019-10-13 23:00:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:17,755 INFO L225 Difference]: With dead ends: 20 [2019-10-13 23:00:17,755 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 23:00:17,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:00:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 23:00:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 23:00:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 23:00:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-13 23:00:17,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-13 23:00:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:17,763 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-13 23:00:17,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:00:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-13 23:00:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 23:00:17,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:17,764 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:17,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:17,966 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash 76376728, now seen corresponding path program 2 times [2019-10-13 23:00:17,968 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:17,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224275815] [2019-10-13 23:00:17,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:17,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:17,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:18,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224275815] [2019-10-13 23:00:18,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639193282] [2019-10-13 23:00:18,058 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:18,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 23:00:18,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:00:18,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 23:00:18,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:18,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:18,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777798613] [2019-10-13 23:00:18,174 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-13 23:00:18,175 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:18,175 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:18,176 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:18,176 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:18,189 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:18,278 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:00:18,299 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:18,302 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:18,302 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:18,302 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:18,303 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:18,303 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#true [2019-10-13 23:00:18,303 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:18,303 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 100#true [2019-10-13 23:00:18,304 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 91#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:18,304 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-13 23:00:18,304 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 86#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 23:00:18,304 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 76#(and (<= 1 main_~i~0) (not (<= main_~i~0 8)) (<= 8 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:18,305 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:18,305 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (<= 1 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:18,420 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:00:18,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 6] total 15 [2019-10-13 23:00:18,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40064899] [2019-10-13 23:00:18,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 23:00:18,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 23:00:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:00:18,423 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2019-10-13 23:00:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:18,562 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-13 23:00:18,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:00:18,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2019-10-13 23:00:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:18,564 INFO L225 Difference]: With dead ends: 24 [2019-10-13 23:00:18,564 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 23:00:18,565 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:00:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 23:00:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 23:00:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 23:00:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-13 23:00:18,571 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2019-10-13 23:00:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:18,572 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-13 23:00:18,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 23:00:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-13 23:00:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 23:00:18,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:18,575 INFO L380 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:18,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:18,779 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:18,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1416005160, now seen corresponding path program 3 times [2019-10-13 23:00:18,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:18,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755832008] [2019-10-13 23:00:18,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:18,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:18,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:19,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755832008] [2019-10-13 23:00:19,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641039379] [2019-10-13 23:00:19,030 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:19,070 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:00:19,070 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:00:19,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 23:00:19,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:19,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:19,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1895038393] [2019-10-13 23:00:19,373 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-13 23:00:19,374 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:19,374 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:19,375 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:19,375 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:19,399 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:19,485 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:00:19,511 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:19,514 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:19,514 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:19,515 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:19,515 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:19,515 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 105#true [2019-10-13 23:00:19,516 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:19,518 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 100#true [2019-10-13 23:00:19,521 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 91#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:19,522 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 81#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0))) [2019-10-13 23:00:19,522 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 86#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-13 23:00:19,522 INFO L193 IcfgInterpreter]: Reachable states at location L13-4 satisfy 76#(and (<= 1 main_~i~0) (not (<= main_~i~0 8)) (<= 8 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:19,522 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 96#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:19,523 INFO L193 IcfgInterpreter]: Reachable states at location L13-3 satisfy 71#(and (<= 1 main_~i~0) (<= 0 main_~sn~0)) [2019-10-13 23:00:19,746 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:00:19,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 6] total 29 [2019-10-13 23:00:19,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176673056] [2019-10-13 23:00:19,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-13 23:00:19,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-13 23:00:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2019-10-13 23:00:19,750 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 29 states. [2019-10-13 23:00:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:20,257 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-10-13 23:00:20,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:00:20,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 18 [2019-10-13 23:00:20,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:20,259 INFO L225 Difference]: With dead ends: 25 [2019-10-13 23:00:20,259 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:00:20,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 23:00:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:00:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:00:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:00:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-13 23:00:20,264 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2019-10-13 23:00:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:20,265 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-13 23:00:20,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-13 23:00:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-13 23:00:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 23:00:20,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:20,266 INFO L380 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:20,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:20,469 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash -971901643, now seen corresponding path program 4 times [2019-10-13 23:00:20,470 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:20,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025096050] [2019-10-13 23:00:20,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:20,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:20,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:20,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025096050] [2019-10-13 23:00:20,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:20,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:00:20,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107636719] [2019-10-13 23:00:20,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:00:20,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:20,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:00:20,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:00:20,563 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2019-10-13 23:00:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:20,596 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-10-13 23:00:20,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:00:20,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2019-10-13 23:00:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:20,597 INFO L225 Difference]: With dead ends: 20 [2019-10-13 23:00:20,597 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 23:00:20,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:00:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 23:00:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 23:00:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 23:00:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 23:00:20,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-10-13 23:00:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:20,599 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 23:00:20,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:00:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 23:00:20,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 23:00:20,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 23:00:20,820 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2019-10-13 23:00:20,822 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 23:00:20,822 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:20,822 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:20,823 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 23:00:20,823 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 23:00:20,823 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 23:00:20,823 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2019-10-13 23:00:20,823 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2019-10-13 23:00:20,823 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 17) no Hoare annotation was computed. [2019-10-13 23:00:20,824 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (and (<= 10 main_~sn~0) (< main_~i~0 7) (<= 6 main_~i~0) (<= main_~sn~0 10)) (and (<= 1 main_~i~0) (<= main_~i~0 1) (<= main_~sn~0 0) (<= 0 main_~sn~0)) (and (<= 7 main_~i~0) (< main_~i~0 8) (<= 12 main_~sn~0) (<= main_~sn~0 12)) (and (<= 14 main_~sn~0) (<= 8 main_~i~0) (<= main_~i~0 8) (<= main_~sn~0 14)) (and (<= 6 main_~sn~0) (<= main_~sn~0 6) (<= 4 main_~i~0) (<= main_~i~0 4)) (and (<= main_~sn~0 8) (<= 5 main_~i~0) (<= main_~i~0 5) (<= 8 main_~sn~0)) (and (<= 9 main_~i~0) (<= main_~sn~0 16) (< 15 main_~sn~0)) (and (<= main_~i~0 3) (<= main_~sn~0 4) (<= 3 main_~i~0) (<= 4 main_~sn~0)) (and (<= 2 main_~i~0) (<= main_~i~0 2) (<= main_~sn~0 2) (<= 2 main_~sn~0))) [2019-10-13 23:00:20,824 INFO L439 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: (and (< 8 main_~i~0) (<= main_~sn~0 16) (< 15 main_~sn~0)) [2019-10-13 23:00:20,824 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 23:00:20,824 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 23:00:20,824 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 23:00:20,824 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 23:00:20,825 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 23:00:20,825 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 23:00:20,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:00:20 BoogieIcfgContainer [2019-10-13 23:00:20,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 23:00:20,856 INFO L168 Benchmark]: Toolchain (without parser) took 5232.41 ms. Allocated memory was 137.4 MB in the beginning and 246.9 MB in the end (delta: 109.6 MB). Free memory was 100.9 MB in the beginning and 155.1 MB in the end (delta: -54.2 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,859 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.00 ms. Allocated memory is still 137.4 MB. Free memory was 100.5 MB in the beginning and 91.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,867 INFO L168 Benchmark]: Boogie Preprocessor took 107.84 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 178.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,867 INFO L168 Benchmark]: RCFGBuilder took 254.66 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 167.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,868 INFO L168 Benchmark]: TraceAbstraction took 4547.72 ms. Allocated memory was 199.8 MB in the beginning and 246.9 MB in the end (delta: 47.2 MB). Free memory was 166.4 MB in the beginning and 155.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:20,874 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.00 ms. Allocated memory is still 137.4 MB. Free memory was 100.5 MB in the beginning and 91.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.84 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 178.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.66 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 167.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4547.72 ms. Allocated memory was 199.8 MB in the beginning and 246.9 MB in the end (delta: 47.2 MB). Free memory was 166.4 MB in the beginning and 155.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 58.5 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: 13]: Loop Invariant Derived loop invariant: ((((((((((10 <= sn && i < 7) && 6 <= i) && sn <= 10) || (((1 <= i && i <= 1) && sn <= 0) && 0 <= sn)) || (((7 <= i && i < 8) && 12 <= sn) && sn <= 12)) || (((14 <= sn && 8 <= i) && i <= 8) && sn <= 14)) || (((6 <= sn && sn <= 6) && 4 <= i) && i <= 4)) || (((sn <= 8 && 5 <= i) && i <= 5) && 8 <= sn)) || ((9 <= i && sn <= 16) && 15 < sn)) || (((i <= 3 && sn <= 4) && 3 <= i) && 4 <= sn)) || (((2 <= i && i <= 2) && sn <= 2) && 2 <= sn) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 9, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 42 SDtfs, 20 SDslu, 200 SDs, 0 SdLazy, 346 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 21 NumberOfFragments, 130 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 6535 SizeOfPredicates, 4 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 45/186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 721, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 63, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 24, TOOLS_POST_CALL_APPLICATIONS: 15, TOOLS_POST_CALL_TIME[ms]: 31, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 51, TOOLS_QUANTIFIERELIM_TIME[ms]: 43, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 19, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 72, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 54, DOMAIN_JOIN_TIME[ms]: 355, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 135, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 28, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME[ms]: 4, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 345, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 344, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME[ms]: 17, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 16, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 26, DAG_COMPRESSION_PROCESSED_NODES: 171, DAG_COMPRESSION_RETAINED_NODES: 123, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...