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-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:12:09,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:09,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:09,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:12:09,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:12:09,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:12:09,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:12:09,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:12:09,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:12:09,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:12:09,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:12:09,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:12:09,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:09,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:09,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:09,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:09,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:09,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:09,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:09,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:09,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:09,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:09,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:09,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:09,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:12:09,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:09,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:09,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:09,589 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 [2019-09-16 16:12:09,603 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:09,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:09,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:09,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:09,605 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:09,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:09,605 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:09,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:09,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:09,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:09,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:09,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:09,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:09,606 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:09,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:09,607 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:09,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:09,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:09,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:09,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:09,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:09,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:09,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:09,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:09,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:09,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:09,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:09,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:09,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:09,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:09,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:09,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:09,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:09,674 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:09,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2019-09-16 16:12:09,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b566e6455/9b0b86fc5a68461f9ed8c6231a43ea78/FLAGd0ae717cb [2019-09-16 16:12:10,183 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:10,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2019-09-16 16:12:10,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b566e6455/9b0b86fc5a68461f9ed8c6231a43ea78/FLAGd0ae717cb [2019-09-16 16:12:10,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b566e6455/9b0b86fc5a68461f9ed8c6231a43ea78 [2019-09-16 16:12:10,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:10,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:10,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:10,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:10,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:10,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221181d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10, skipping insertion in model container [2019-09-16 16:12:10,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,641 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:10,660 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:10,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:10,838 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:10,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:10,864 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:10,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10 WrapperNode [2019-09-16 16:12:10,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:10,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:10,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:10,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:10,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:10,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:10,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:10,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:10,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (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 [2019-09-16 16:12:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:12:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:11,224 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:11,225 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:12:11,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:11 BoogieIcfgContainer [2019-09-16 16:12:11,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:11,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:11,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:11,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:11,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:10" (1/3) ... [2019-09-16 16:12:11,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273e9d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:11, skipping insertion in model container [2019-09-16 16:12:11,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (2/3) ... [2019-09-16 16:12:11,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273e9d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:11, skipping insertion in model container [2019-09-16 16:12:11,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:11" (3/3) ... [2019-09-16 16:12:11,234 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2019-09-16 16:12:11,243 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:11,250 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:11,277 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:11,349 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:11,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:11,350 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:11,350 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:11,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:11,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:11,351 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:11,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:11,351 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-16 16:12:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:12:11,375 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:11,376 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:11,379 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:11,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1719634852, now seen corresponding path program 1 times [2019-09-16 16:12:11,386 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:11,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:11,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:11,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:11,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:11,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:12:11,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:12:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:12:11,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:12:11,595 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-09-16 16:12:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:11,709 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2019-09-16 16:12:11,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:12:11,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-16 16:12:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:11,722 INFO L225 Difference]: With dead ends: 46 [2019-09-16 16:12:11,723 INFO L226 Difference]: Without dead ends: 22 [2019-09-16 16:12:11,726 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:12:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-16 16:12:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-16 16:12:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-16 16:12:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-16 16:12:11,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2019-09-16 16:12:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:11,769 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-16 16:12:11,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:12:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-16 16:12:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 16:12:11,771 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:11,771 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:11,772 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 769813017, now seen corresponding path program 1 times [2019-09-16 16:12:11,772 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:11,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:11,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:11,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:11,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:11,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:12:11,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:12:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:12:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:12:11,866 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2019-09-16 16:12:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:11,922 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-09-16 16:12:11,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:12:11,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 16:12:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:11,924 INFO L225 Difference]: With dead ends: 28 [2019-09-16 16:12:11,925 INFO L226 Difference]: Without dead ends: 26 [2019-09-16 16:12:11,926 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:12:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-16 16:12:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-16 16:12:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-16 16:12:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-09-16 16:12:11,934 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2019-09-16 16:12:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:11,935 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-09-16 16:12:11,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:12:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-09-16 16:12:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-16 16:12:11,936 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:11,936 INFO L407 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:11,936 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:11,937 INFO L82 PathProgramCache]: Analyzing trace with hash 889343161, now seen corresponding path program 1 times [2019-09-16 16:12:11,937 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:11,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:11,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:11,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-16 16:12:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-16 16:12:12,016 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-16 16:12:12,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:12:12 BoogieIcfgContainer [2019-09-16 16:12:12,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:12:12,039 INFO L168 Benchmark]: Toolchain (without parser) took 1412.20 ms. Allocated memory was 137.4 MB in the beginning and 197.1 MB in the end (delta: 59.8 MB). Free memory was 85.1 MB in the beginning and 118.9 MB in the end (delta: -33.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,040 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.34 ms. Allocated memory is still 137.4 MB. Free memory was 84.7 MB in the beginning and 75.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,042 INFO L168 Benchmark]: Boogie Preprocessor took 110.77 ms. Allocated memory was 137.4 MB in the beginning and 197.1 MB in the end (delta: 59.8 MB). Free memory was 75.4 MB in the beginning and 174.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,043 INFO L168 Benchmark]: RCFGBuilder took 249.70 ms. Allocated memory is still 197.1 MB. Free memory was 174.4 MB in the beginning and 161.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,044 INFO L168 Benchmark]: TraceAbstraction took 809.13 ms. Allocated memory is still 197.1 MB. Free memory was 161.7 MB in the beginning and 118.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:12,047 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.34 ms. Allocated memory is still 137.4 MB. Free memory was 84.7 MB in the beginning and 75.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.77 ms. Allocated memory was 137.4 MB in the beginning and 197.1 MB in the end (delta: 59.8 MB). Free memory was 75.4 MB in the beginning and 174.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.70 ms. Allocated memory is still 197.1 MB. Free memory was 174.4 MB in the beginning and 161.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 809.13 ms. Allocated memory is still 197.1 MB. Free memory was 161.7 MB in the beginning and 118.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 13 SDslu, 98 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...