java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:30,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:30,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:30,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 12:58:30,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:30,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:30,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:30,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:30,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:30,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:30,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:30,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:30,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:30,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:30,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:30,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:30,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:30,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:30,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:30,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:30,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 12:58:30,523 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:30,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:30,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:30,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:30,525 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:30,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:30,526 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:30,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:30,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:30,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:30,527 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:30,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:30,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:30,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:30,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:30,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:30,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:30,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:30,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:30,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:30,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:30,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:30,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:30,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:30,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:30,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:30,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:30,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:30,580 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:30,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-09-20 12:58:30,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84af6a0ba/10772992e4164c88ac3b5f5b0c454fca/FLAG841c10385 [2019-09-20 12:58:31,144 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:31,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-09-20 12:58:31,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84af6a0ba/10772992e4164c88ac3b5f5b0c454fca/FLAG841c10385 [2019-09-20 12:58:31,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84af6a0ba/10772992e4164c88ac3b5f5b0c454fca [2019-09-20 12:58:31,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:31,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:31,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:31,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:31,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:31,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc7feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31, skipping insertion in model container [2019-09-20 12:58:31,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,501 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:31,519 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:31,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:31,736 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:31,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:31,781 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:31,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31 WrapperNode [2019-09-20 12:58:31,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:31,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:31,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:31,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:31,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... [2019-09-20 12:58:31,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:31,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:31,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:31,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:31,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:31,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:31,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:31,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:32,170 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:32,171 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 12:58:32,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:32 BoogieIcfgContainer [2019-09-20 12:58:32,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:32,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:32,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:32,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:32,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:31" (1/3) ... [2019-09-20 12:58:32,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5b0d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:32, skipping insertion in model container [2019-09-20 12:58:32,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:31" (2/3) ... [2019-09-20 12:58:32,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5b0d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:32, skipping insertion in model container [2019-09-20 12:58:32,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:32" (3/3) ... [2019-09-20 12:58:32,181 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-09-20 12:58:32,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:32,199 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:32,216 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:32,242 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:32,243 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:32,243 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:32,243 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:32,243 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:32,243 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:32,244 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:32,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:32,244 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-20 12:58:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 12:58:32,265 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:32,266 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:32,268 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1883805102, now seen corresponding path program 1 times [2019-09-20 12:58:32,274 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:32,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:32,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:32,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:32,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:32,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:58:32,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:58:32,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:58:32,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:58:32,555 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-09-20 12:58:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:32,680 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-20 12:58:32,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 12:58:32,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-20 12:58:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:32,690 INFO L225 Difference]: With dead ends: 33 [2019-09-20 12:58:32,690 INFO L226 Difference]: Without dead ends: 16 [2019-09-20 12:58:32,693 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 12:58:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-20 12:58:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-20 12:58:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 12:58:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-09-20 12:58:32,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-09-20 12:58:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:32,732 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-09-20 12:58:32,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:58:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-09-20 12:58:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 12:58:32,733 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:32,734 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:32,734 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2141584271, now seen corresponding path program 1 times [2019-09-20 12:58:32,735 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:32,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:32,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:32,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:32,822 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:32,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:32,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 12:58:32,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:32,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:32,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:32,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-20 12:58:32,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 12:58:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 12:58:32,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-20 12:58:32,977 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-09-20 12:58:33,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:33,113 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-20 12:58:33,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 12:58:33,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-09-20 12:58:33,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:33,114 INFO L225 Difference]: With dead ends: 19 [2019-09-20 12:58:33,115 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:33,116 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-20 12:58:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:33,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-20 12:58:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:33,119 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:33,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 12:58:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:33,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:33,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:33,213 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:33,213 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:33,214 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:33,214 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:33,214 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:33,214 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:33,215 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:33,215 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 69) the Hoare annotation is: true [2019-09-20 12:58:33,215 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-09-20 12:58:33,215 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 69) no Hoare annotation was computed. [2019-09-20 12:58:33,215 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-09-20 12:58:33,216 INFO L443 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-09-20 12:58:33,216 INFO L443 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-09-20 12:58:33,216 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-09-20 12:58:33,216 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 69) no Hoare annotation was computed. [2019-09-20 12:58:33,216 INFO L439 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (and (<= (+ (div (+ (- main_~main__x~0) (- 2)) (- 2)) 1) main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2019-09-20 12:58:33,217 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-09-20 12:58:33,217 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-09-20 12:58:33,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:33 BoogieIcfgContainer [2019-09-20 12:58:33,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:33,236 INFO L168 Benchmark]: Toolchain (without parser) took 1752.30 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 87.1 MB in the beginning and 103.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,237 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.37 ms. Allocated memory is still 139.5 MB. Free memory was 86.9 MB in the beginning and 77.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,240 INFO L168 Benchmark]: Boogie Preprocessor took 133.41 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 176.3 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,241 INFO L168 Benchmark]: RCFGBuilder took 256.10 ms. Allocated memory is still 199.2 MB. Free memory was 176.3 MB in the beginning and 164.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,242 INFO L168 Benchmark]: TraceAbstraction took 1059.41 ms. Allocated memory is still 199.2 MB. Free memory was 164.0 MB in the beginning and 103.2 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:33,246 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 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.37 ms. Allocated memory is still 139.5 MB. Free memory was 86.9 MB in the beginning and 77.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.41 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 176.3 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.10 ms. Allocated memory is still 199.2 MB. Free memory was 176.3 MB in the beginning and 164.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1059.41 ms. Allocated memory is still 199.2 MB. Free memory was 164.0 MB in the beginning and 103.2 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 28]: Loop Invariant Derived loop invariant: ((-main__x + -2) / -2 + 1 <= main__y && main__x + 2 <= main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 15 SDslu, 76 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 5 PreInvPairs, 7 NumberOfFragments, 26 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1694 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...