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-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:02:04,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:04,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:04,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:04,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:04,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:04,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:04,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:04,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:04,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:04,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:04,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:04,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:04,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:04,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:04,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:04,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:04,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:04,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:04,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:04,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:04,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:04,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:04,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:04,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:04,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:04,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:04,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:04,341 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 [2019-10-15 03:02:04,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:04,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:04,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:04,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:04,364 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:04,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:04,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:04,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:04,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:04,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:04,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:04,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:04,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:04,367 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:04,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:04,367 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:04,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:04,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:04,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:04,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:04,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:04,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:04,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:04,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:04,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:04,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:04,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:04,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:04,370 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 [2019-10-15 03:02:04,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:04,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:04,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:04,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:04,682 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:04,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2019-10-15 03:02:04,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a1db92f/2d350fc89d924972b7a7b5742ebbc7d7/FLAG10ef66504 [2019-10-15 03:02:05,169 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:05,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2019-10-15 03:02:05,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a1db92f/2d350fc89d924972b7a7b5742ebbc7d7/FLAG10ef66504 [2019-10-15 03:02:05,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a1db92f/2d350fc89d924972b7a7b5742ebbc7d7 [2019-10-15 03:02:05,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:05,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:05,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:05,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:05,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:05,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05, skipping insertion in model container [2019-10-15 03:02:05,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:05,587 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:05,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:05,757 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:05,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:05,781 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05 WrapperNode [2019-10-15 03:02:05,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:05,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:05,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:05,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:05,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2019-10-15 03:02:05,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:05,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:05,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:05,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:05,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (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 [2019-10-15 03:02:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:02:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:06,167 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:06,168 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:02:06,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:06 BoogieIcfgContainer [2019-10-15 03:02:06,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:06,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:06,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:06,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:06,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:05" (1/3) ... [2019-10-15 03:02:06,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448b0c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:06, skipping insertion in model container [2019-10-15 03:02:06,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (2/3) ... [2019-10-15 03:02:06,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448b0c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:06, skipping insertion in model container [2019-10-15 03:02:06,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:06" (3/3) ... [2019-10-15 03:02:06,177 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2019-10-15 03:02:06,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:06,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:06,225 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:06,287 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:06,287 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:06,287 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:06,288 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:06,288 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:06,288 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:06,288 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:06,288 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-15 03:02:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:02:06,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:06,318 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:06,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:06,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1733570904, now seen corresponding path program 1 times [2019-10-15 03:02:06,337 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:06,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532131116] [2019-10-15 03:02:06,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:06,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:06,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:06,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532131116] [2019-10-15 03:02:06,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:06,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:02:06,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882455268] [2019-10-15 03:02:06,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:02:06,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:06,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:02:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:02:06,595 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-10-15 03:02:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:06,671 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-10-15 03:02:06,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:02:06,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:02:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:06,685 INFO L225 Difference]: With dead ends: 23 [2019-10-15 03:02:06,686 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:02:06,692 INFO L600 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 [2019-10-15 03:02:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:02:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:02:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:02:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:02:06,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-15 03:02:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:06,721 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:02:06,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:02:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:02:06,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:02:06,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:02:06,775 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:02:06,775 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:06,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:06,776 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:02:06,776 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:02:06,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:02:06,776 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2019-10-15 03:02:06,777 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2019-10-15 03:02:06,777 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 03:02:06,778 INFO L439 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2019-10-15 03:02:06,778 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2019-10-15 03:02:06,778 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 03:02:06,779 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:06,779 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 03:02:06,779 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 03:02:06,779 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 03:02:06,779 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:06,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:02:06 BoogieIcfgContainer [2019-10-15 03:02:06,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:02:06,797 INFO L168 Benchmark]: Toolchain (without parser) took 1236.60 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 135.1 MB in the end (delta: -32.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,798 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.22 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,801 INFO L168 Benchmark]: Boogie Preprocessor took 113.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 93.3 MB in the beginning and 179.1 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,802 INFO L168 Benchmark]: RCFGBuilder took 273.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 164.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,803 INFO L168 Benchmark]: TraceAbstraction took 624.43 ms. Allocated memory is still 200.8 MB. Free memory was 164.2 MB in the beginning and 135.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:06,807 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 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 220.22 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 93.3 MB in the beginning and 179.1 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 164.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 624.43 ms. Allocated memory is still 200.8 MB. Free memory was 164.2 MB in the beginning and 135.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 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: w == x && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 27 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 19 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...