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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-crafted/bAnd5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:27,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:27,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:27,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:27,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:27,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:27,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:27,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:27,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:27,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:27,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:27,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:27,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:27,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:27,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:27,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:27,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:27,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:27,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:27,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:27,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:27,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:27,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:27,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:27,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:29:27,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:29:27,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:29:27,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:29:27,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:29:27,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:29:27,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:27,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:27,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:27,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:27,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:27,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:27,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:27,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:27,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:27,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:27,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:27,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:29:27,560 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:27,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:27,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:27,560 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:27,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:27,561 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:27,562 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:27,562 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:27,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:27,562 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:27,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:27,563 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:27,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:27,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:27,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:27,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:27,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:27,564 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:27,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:27,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:27,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:27,565 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:27,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:27,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:27,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:27,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:27,566 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:27,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:27,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:27,567 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:27,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:27,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:27,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:27,614 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:27,615 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:27,615 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd5.i [2019-10-02 16:29:27,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71666b0c/bc9744bac4844e6daf9c5014a7450714/FLAG2b0210a39 [2019-10-02 16:29:28,085 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:28,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd5.i [2019-10-02 16:29:28,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71666b0c/bc9744bac4844e6daf9c5014a7450714/FLAG2b0210a39 [2019-10-02 16:29:28,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71666b0c/bc9744bac4844e6daf9c5014a7450714 [2019-10-02 16:29:28,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:28,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:28,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:28,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:28,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:28,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbd8e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28, skipping insertion in model container [2019-10-02 16:29:28,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,478 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:28,495 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:28,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:28,709 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:28,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:28,879 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:28,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28 WrapperNode [2019-10-02 16:29:28,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:28,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:28,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:28,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:28,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (1/1) ... [2019-10-02 16:29:28,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:28,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:28,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:28,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:28,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (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 16:29:29,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2019-10-02 16:29:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:29,380 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:29,381 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:29:29,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:29 BoogieIcfgContainer [2019-10-02 16:29:29,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:29,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:29,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:29,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:29,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:28" (1/3) ... [2019-10-02 16:29:29,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d51ee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:29, skipping insertion in model container [2019-10-02 16:29:29,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:28" (2/3) ... [2019-10-02 16:29:29,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d51ee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:29, skipping insertion in model container [2019-10-02 16:29:29,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:29" (3/3) ... [2019-10-02 16:29:29,390 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2019-10-02 16:29:29,399 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:29,406 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:29,426 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:29,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:29,452 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:29,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:29,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:29,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:29,452 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:29,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:29,453 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-02 16:29:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-02 16:29:29,479 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:29,480 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:29,482 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2019-10-02 16:29:29,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:29,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:29,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:29,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:29,546 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 16:29:29,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:29,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:29,670 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:29,675 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:29,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:29,693 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-02 16:29:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:29,709 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-02 16:29:29,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:29,710 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-10-02 16:29:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:29,719 INFO L225 Difference]: With dead ends: 33 [2019-10-02 16:29:29,720 INFO L226 Difference]: Without dead ends: 27 [2019-10-02 16:29:29,722 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 16:29:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-02 16:29:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-02 16:29:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-02 16:29:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-02 16:29:29,765 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-10-02 16:29:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:29,765 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-02 16:29:29,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-02 16:29:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-02 16:29:29,768 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:29,768 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:29,769 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:29,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2019-10-02 16:29:29,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:29,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:29,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:29,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:29,772 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 16:29:29,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:29,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:29,985 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:29,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:29,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:29,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:29,989 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-10-02 16:29:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:30,054 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-02 16:29:30,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:30,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-10-02 16:29:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:30,056 INFO L225 Difference]: With dead ends: 29 [2019-10-02 16:29:30,057 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 16:29:30,058 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 16:29:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-02 16:29:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:29:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-02 16:29:30,071 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-10-02 16:29:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:30,072 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-02 16:29:30,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-02 16:29:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-02 16:29:30,074 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:30,074 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:30,075 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2019-10-02 16:29:30,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:30,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:30,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:30,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:30,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 16:29:30,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:30,242 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:30,243 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-10-02 16:29:30,246 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [16], [17], [21], [24], [30], [32], [34], [39], [41], [47], [55], [57], [60], [61], [72], [73], [74], [76], [77], [78], [79], [80], [81] [2019-10-02 16:29:30,291 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:30,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:30,355 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:30,357 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-10-02 16:29:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:30,360 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:30,401 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:29:30,402 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:30,415 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-10-02 16:29:30,415 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:30,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:30,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-10-02 16:29:30,416 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:30,417 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:30,418 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-02 16:29:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:30,422 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:29:30,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:30,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-10-02 16:29:30,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:30,423 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:29:30,423 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:30,423 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:30,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-10-02 16:29:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:30,425 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:30,425 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:30,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:30,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:30 BoogieIcfgContainer [2019-10-02 16:29:30,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:30,433 INFO L168 Benchmark]: Toolchain (without parser) took 1969.11 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.9 MB in the beginning and 107.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,434 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.58 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.7 MB in the beginning and 179.2 MB in the end (delta: -90.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,436 INFO L168 Benchmark]: Boogie Preprocessor took 80.76 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,437 INFO L168 Benchmark]: RCFGBuilder took 419.50 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 159.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,437 INFO L168 Benchmark]: TraceAbstraction took 1046.54 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 107.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:30,446 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.58 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.7 MB in the beginning and 179.2 MB in the end (delta: -90.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.76 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.50 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 159.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1046.54 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 107.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 73 SDtfs, 4 SDslu, 21 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9607843137254901 AbsIntWeakeningRatio, 1.411764705882353 AbsIntAvgWeakeningVarsNumRemoved, 0.47058823529411764 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 38/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...