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/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:18:50,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:18:50,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:18:50,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:18:50,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:18:50,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:18:50,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:18:50,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:18:50,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:18:50,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:18:50,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:18:50,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:18:50,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:18:50,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:18:50,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:18:50,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:18:50,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:18:50,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:18:50,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:18:50,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:18:50,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:18:50,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:18:50,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:18:50,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:18:50,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:18:50,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:18:50,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:18:50,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:18:50,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:18:50,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:18:50,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:18:50,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:18:50,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:18:50,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:18:50,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:18:50,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:18:50,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:18:50,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:18:50,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:18:50,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:18:50,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:18:50,517 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 11:18:50,530 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:18:50,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:18:50,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:18:50,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:18:50,532 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:18:50,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:18:50,533 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:18:50,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:18:50,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:18:50,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:18:50,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:18:50,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:18:50,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:18:50,534 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:18:50,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:18:50,535 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:18:50,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:18:50,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:18:50,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:18:50,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:18:50,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:18:50,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:18:50,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:18:50,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:18:50,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:18:50,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:18:50,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:18:50,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:18:50,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:18:50,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:18:50,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:18:50,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:18:50,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:18:50,581 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:18:50,582 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-02 11:18:50,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4697f21ac/7b54f511a237485abbefe78f9520f4ed/FLAG8d62db921 [2019-10-02 11:18:51,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:18:51,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-02 11:18:51,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4697f21ac/7b54f511a237485abbefe78f9520f4ed/FLAG8d62db921 [2019-10-02 11:18:51,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4697f21ac/7b54f511a237485abbefe78f9520f4ed [2019-10-02 11:18:51,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:18:51,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:18:51,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:51,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:18:51,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:18:51,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8962239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51, skipping insertion in model container [2019-10-02 11:18:51,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,484 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:18:51,500 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:18:51,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:51,706 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:18:51,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:51,748 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:18:51,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51 WrapperNode [2019-10-02 11:18:51,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:51,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:18:51,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:18:51,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:18:51,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (1/1) ... [2019-10-02 11:18:51,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:18:51,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:18:51,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:18:51,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:18:51,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (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 11:18:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:18:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:18:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:18:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:18:52,120 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:18:52,120 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:18:52,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:52 BoogieIcfgContainer [2019-10-02 11:18:52,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:18:52,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:18:52,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:18:52,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:18:52,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:18:51" (1/3) ... [2019-10-02 11:18:52,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3f5288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:52, skipping insertion in model container [2019-10-02 11:18:52,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:51" (2/3) ... [2019-10-02 11:18:52,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3f5288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:52, skipping insertion in model container [2019-10-02 11:18:52,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:52" (3/3) ... [2019-10-02 11:18:52,129 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2019-10-02 11:18:52,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:18:52,146 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:18:52,162 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:18:52,205 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:18:52,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:18:52,207 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:18:52,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:18:52,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:18:52,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:18:52,208 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:18:52,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:18:52,209 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:18:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-02 11:18:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:18:52,246 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:52,247 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:52,251 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1706723647, now seen corresponding path program 1 times [2019-10-02 11:18:52,263 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:52,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:52,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:52,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:52,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:52,372 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 11:18:52,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:52,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:18:52,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:18:52,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:18:52,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:18:52,394 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-02 11:18:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:52,416 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-02 11:18:52,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:18:52,417 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 11:18:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:52,426 INFO L225 Difference]: With dead ends: 36 [2019-10-02 11:18:52,427 INFO L226 Difference]: Without dead ends: 17 [2019-10-02 11:18:52,430 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 11:18:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-02 11:18:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-02 11:18:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-02 11:18:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-10-02 11:18:52,464 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-10-02 11:18:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:52,465 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-10-02 11:18:52,465 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:18:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-10-02 11:18:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 11:18:52,466 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:52,466 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:52,467 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2024305743, now seen corresponding path program 1 times [2019-10-02 11:18:52,467 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:52,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:52,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:52,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:52,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:18:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:18:52,527 INFO L478 BasicCegarLoop]: Counterexample might be feasible [2019-10-02 11:18:52,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:18:52 BoogieIcfgContainer [2019-10-02 11:18:52,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:18:52,553 INFO L168 Benchmark]: Toolchain (without parser) took 1083.85 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 86.3 MB in the beginning and 139.3 MB in the end (delta: -53.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,554 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.27 ms. Allocated memory is still 130.5 MB. Free memory was 86.1 MB in the beginning and 76.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,556 INFO L168 Benchmark]: Boogie Preprocessor took 109.52 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.5 MB in the beginning and 174.5 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,557 INFO L168 Benchmark]: RCFGBuilder took 262.09 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,558 INFO L168 Benchmark]: TraceAbstraction took 427.71 ms. Allocated memory is still 198.2 MB. Free memory was 161.4 MB in the beginning and 139.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:52,571 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 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.27 ms. Allocated memory is still 130.5 MB. Free memory was 86.1 MB in the beginning and 76.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.52 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 76.5 MB in the beginning and 174.5 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.09 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 427.71 ms. Allocated memory is still 198.2 MB. Free memory was 161.4 MB in the beginning and 139.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 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 x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L28] CALL __VERIFIER_assert(x >= 4 && y <= 2) 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, 24 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...