java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_1_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:36:24,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:36:24,456 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:36:24,472 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:36:24,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:36:24,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:36:24,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:36:24,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:36:24,481 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:36:24,482 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:36:24,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:36:24,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:36:24,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:36:24,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:36:24,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:36:24,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:36:24,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:36:24,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:36:24,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:36:24,496 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:36:24,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:36:24,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:36:24,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:36:24,526 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-22 15:36:24,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:36:24,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:36:24,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:36:24,548 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:36:24,550 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:36:24,550 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:36:24,550 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:36:24,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:36:24,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:36:24,552 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:36:24,552 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:36:24,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:36:24,552 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:36:24,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:36:24,553 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:36:24,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:36:24,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:36:24,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:36:24,554 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:36:24,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:36:24,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:36:24,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:36:24,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:36:24,555 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:36:24,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:36:24,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:36:24,556 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:36:24,557 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:36:24,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:36:24,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:36:24,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:36:24,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:36:24,644 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:36:24,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:36:24,711 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/537d7538d/ab150690e93c4dc6a89457e95915bcf4/FLAG6cf609ff0 [2018-10-22 15:36:25,193 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:36:25,193 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:36:25,199 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/537d7538d/ab150690e93c4dc6a89457e95915bcf4/FLAG6cf609ff0 [2018-10-22 15:36:25,213 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/537d7538d/ab150690e93c4dc6a89457e95915bcf4 [2018-10-22 15:36:25,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:36:25,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:36:25,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:25,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:36:25,228 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:36:25,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3502ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25, skipping insertion in model container [2018-10-22 15:36:25,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:36:25,264 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:36:25,437 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:25,441 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:36:25,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:25,479 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:36:25,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25 WrapperNode [2018-10-22 15:36:25,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:25,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:25,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:36:25,481 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:36:25,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:25,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:36:25,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:36:25,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:36:25,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... [2018-10-22 15:36:25,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:36:25,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:36:25,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:36:25,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:36:25,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 15:36:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:36:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:36:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:36:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:36:25,869 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:36:25,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:25 BoogieIcfgContainer [2018-10-22 15:36:25,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:36:25,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:36:25,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:36:25,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:36:25,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:36:25" (1/3) ... [2018-10-22 15:36:25,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba549e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:25, skipping insertion in model container [2018-10-22 15:36:25,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:25" (2/3) ... [2018-10-22 15:36:25,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba549e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:25, skipping insertion in model container [2018-10-22 15:36:25,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:25" (3/3) ... [2018-10-22 15:36:25,877 INFO L112 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:36:25,886 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:36:25,894 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:36:25,911 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:36:25,944 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:36:25,945 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:36:25,945 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:36:25,945 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:36:25,946 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:36:25,946 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:36:25,946 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:36:25,946 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:36:25,946 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:36:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-10-22 15:36:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-22 15:36:25,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:25,968 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:25,971 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:25,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash 188569446, now seen corresponding path program 1 times [2018-10-22 15:36:25,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:25,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:26,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:26,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:26,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:26,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:26,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:36:26,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:36:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:36:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:26,134 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-10-22 15:36:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:26,162 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-10-22 15:36:26,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:36:26,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-10-22 15:36:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:26,173 INFO L225 Difference]: With dead ends: 30 [2018-10-22 15:36:26,173 INFO L226 Difference]: Without dead ends: 13 [2018-10-22 15:36:26,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-22 15:36:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-22 15:36:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 15:36:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-22 15:36:26,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2018-10-22 15:36:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:26,213 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-22 15:36:26,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:36:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-22 15:36:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-22 15:36:26,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:26,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:26,214 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:26,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1242554304, now seen corresponding path program 1 times [2018-10-22 15:36:26,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:26,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:26,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:26,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:26,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:26,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:26,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:36:26,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:36:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:36:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:26,441 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-10-22 15:36:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:26,524 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-22 15:36:26,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:36:26,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-10-22 15:36:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:26,532 INFO L225 Difference]: With dead ends: 13 [2018-10-22 15:36:26,532 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:36:26,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:36:26,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:36:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:36:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:36:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:36:26,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-10-22 15:36:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:26,535 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:36:26,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:36:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:36:26,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:36:26,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:36:26,594 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:36:26,594 INFO L428 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2018-10-22 15:36:26,595 INFO L421 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2018-10-22 15:36:26,595 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:36:26,595 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:36:26,596 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2018-10-22 15:36:26,596 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: false [2018-10-22 15:36:26,596 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:36:26,596 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:36:26,596 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:36:26,597 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 15:36:26,597 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 15:36:26,597 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:36:26,597 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:36:26,597 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:36:26,598 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:36:26,598 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:36:26,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:36:26 BoogieIcfgContainer [2018-10-22 15:36:26,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:36:26,613 INFO L168 Benchmark]: Toolchain (without parser) took 1390.18 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -745.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:36:26,615 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:36:26,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:26,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:36:26,617 INFO L168 Benchmark]: Boogie Preprocessor took 17.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:36:26,618 INFO L168 Benchmark]: RCFGBuilder took 338.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:26,619 INFO L168 Benchmark]: TraceAbstraction took 741.31 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:26,625 INFO L336 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 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 338.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 741.31 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 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: 15]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 6 SDslu, 16 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 9 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...