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-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:17:34,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:17:34,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:17:34,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:17:34,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:17:34,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:17:34,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:17:34,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:17:34,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:17:34,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:17:34,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:17:34,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:17:34,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:17:34,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:17:34,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:17:34,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:17:34,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:17:34,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:17:34,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:17:34,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:17:34,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:17:34,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:17:34,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:17:34,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:17:34,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:17:34,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:17:34,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:17:34,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:17:34,570 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 [2019-10-02 11:17:34,586 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:17:34,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:17:34,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:17:34,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:17:34,588 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:17:34,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:17:34,588 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:17:34,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:17:34,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:17:34,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:17:34,590 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:17:34,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:17:34,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:17:34,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:17:34,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:17:34,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:17:34,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:17:34,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:17:34,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:17:34,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:17:34,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:17:34,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:17:34,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:17:34,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:17:34,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:17:34,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:17:34,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:17:34,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:17:34,659 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:17:34,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2019-10-02 11:17:34,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd74a43f/e3025373fc884c26a03d1048f154077c/FLAG77c6df0f7 [2019-10-02 11:17:35,205 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:17:35,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2019-10-02 11:17:35,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd74a43f/e3025373fc884c26a03d1048f154077c/FLAG77c6df0f7 [2019-10-02 11:17:35,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd74a43f/e3025373fc884c26a03d1048f154077c [2019-10-02 11:17:35,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:17:35,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:17:35,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:17:35,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:17:35,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:17:35,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e04f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35, skipping insertion in model container [2019-10-02 11:17:35,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,612 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:17:35,632 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:17:35,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:17:35,812 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:17:35,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:17:35,847 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:17:35,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35 WrapperNode [2019-10-02 11:17:35,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:17:35,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:17:35,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:17:35,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:17:35,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (1/1) ... [2019-10-02 11:17:35,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:17:35,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:17:35,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:17:35,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:17:35,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (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 [2019-10-02 11:17:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:17:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:17:36,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:17:36,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:17:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:17:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:17:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:17:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:17:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:17:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:17:36,160 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:17:36,161 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:17:36,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:17:36 BoogieIcfgContainer [2019-10-02 11:17:36,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:17:36,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:17:36,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:17:36,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:17:36,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:17:35" (1/3) ... [2019-10-02 11:17:36,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abce57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:17:36, skipping insertion in model container [2019-10-02 11:17:36,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:17:35" (2/3) ... [2019-10-02 11:17:36,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abce57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:17:36, skipping insertion in model container [2019-10-02 11:17:36,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:17:36" (3/3) ... [2019-10-02 11:17:36,171 INFO L109 eAbstractionObserver]: Analyzing ICFG mod4.c [2019-10-02 11:17:36,181 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:17:36,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:17:36,204 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:17:36,234 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:17:36,235 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:17:36,235 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:17:36,235 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:17:36,235 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:17:36,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:17:36,235 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:17:36,236 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:17:36,236 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:17:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-02 11:17:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:17:36,255 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:17:36,255 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:17:36,258 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:17:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:17:36,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-10-02 11:17:36,264 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:17:36,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:17:36,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:17:36,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:17:36,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:17:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:17:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:17:36,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:17:36,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:17:36,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:17:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:17:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:17:36,381 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-02 11:17:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:17:36,400 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-10-02 11:17:36,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:17:36,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 11:17:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:17:36,409 INFO L225 Difference]: With dead ends: 31 [2019-10-02 11:17:36,410 INFO L226 Difference]: Without dead ends: 12 [2019-10-02 11:17:36,413 INFO L640 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 [2019-10-02 11:17:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-02 11:17:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-02 11:17:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-02 11:17:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-02 11:17:36,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-02 11:17:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:17:36,454 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-02 11:17:36,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:17:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-02 11:17:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 11:17:36,455 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:17:36,455 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:17:36,455 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:17:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:17:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2019-10-02 11:17:36,456 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:17:36,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:17:36,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:17:36,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:17:36,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:17:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:17:36,756 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2019-10-02 11:17:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:17:36,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:17:36,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 11:17:36,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:17:36,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:17:36,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:17:36,781 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-10-02 11:17:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:17:36,821 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-02 11:17:36,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:17:36,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-02 11:17:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:17:36,822 INFO L225 Difference]: With dead ends: 12 [2019-10-02 11:17:36,822 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:17:36,824 INFO L640 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 [2019-10-02 11:17:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:17:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:17:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:17:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:17:36,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-02 11:17:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:17:36,826 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:17:36,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:17:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:17:36,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:17:36,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:17:36,882 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-02 11:17:36,883 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:17:36,883 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:17:36,883 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:17:36,883 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:17:36,884 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:17:36,884 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2019-10-02 11:17:36,884 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2019-10-02 11:17:36,884 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-02 11:17:36,885 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2019-10-02 11:17:36,885 INFO L443 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2019-10-02 11:17:36,885 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 4))) (+ (* 4294967296 (div (+ main_~x~0 (* (- 4) .cse0)) 4294967296)) (* 4 .cse0)))) (<= 0 main_~x~0)) [2019-10-02 11:17:36,886 INFO L439 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 4))) (+ (* 4294967296 (div (+ main_~x~0 (* (- 4) .cse0)) 4294967296)) (* 4 .cse0)))) (<= 0 main_~x~0)) [2019-10-02 11:17:36,886 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:17:36,887 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:17:36,887 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:17:36,887 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:17:36,887 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:17:36,887 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:17:36,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:17:36 BoogieIcfgContainer [2019-10-02 11:17:36,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:17:36,905 INFO L168 Benchmark]: Toolchain (without parser) took 1309.43 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 88.1 MB in the beginning and 128.4 MB in the end (delta: -40.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,906 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.79 ms. Allocated memory is still 133.2 MB. Free memory was 87.9 MB in the beginning and 78.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,908 INFO L168 Benchmark]: Boogie Preprocessor took 110.19 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 78.7 MB in the beginning and 176.7 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,910 INFO L168 Benchmark]: RCFGBuilder took 202.83 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,910 INFO L168 Benchmark]: TraceAbstraction took 739.05 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 128.4 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-10-02 11:17:36,915 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.79 ms. Allocated memory is still 133.2 MB. Free memory was 87.9 MB in the beginning and 78.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.19 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 78.7 MB in the beginning and 176.7 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 202.83 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 739.05 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 128.4 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 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: 11]: Loop Invariant Derived loop invariant: x <= 4294967296 * ((x + -4 * (x / 4)) / 4294967296) + 4 * (x / 4) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 1 SDslu, 20 SDs, 0 SdLazy, 5 SolverSat, 1 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=19occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 51 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 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...