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/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 03:06:17,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 03:06:17,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 03:06:17,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 03:06:17,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 03:06:17,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 03:06:17,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 03:06:17,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 03:06:17,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 03:06:17,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 03:06:17,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 03:06:17,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 03:06:17,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 03:06:17,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 03:06:17,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 03:06:17,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 03:06:17,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 03:06:17,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 03:06:17,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 03:06:17,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 03:06:17,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 03:06:17,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 03:06:17,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 03:06:17,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 03:06:17,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 03:06:17,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 03:06:17,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 03:06:17,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 03:06:17,606 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 [2019-09-10 03:06:17,620 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 03:06:17,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 03:06:17,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 03:06:17,621 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 03:06:17,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 03:06:17,622 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 03:06:17,622 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 03:06:17,623 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 03:06:17,623 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 03:06:17,623 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 03:06:17,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 03:06:17,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 03:06:17,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 03:06:17,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 03:06:17,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 03:06:17,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 03:06:17,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 03:06:17,625 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 03:06:17,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 03:06:17,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 03:06:17,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 03:06:17,626 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 03:06:17,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 03:06:17,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 03:06:17,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 03:06:17,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 03:06:17,627 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 03:06:17,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 03:06:17,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 03:06:17,628 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 03:06:17,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 03:06:17,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 03:06:17,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 03:06:17,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 03:06:17,675 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 03:06:17,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2019-09-10 03:06:17,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7f997eb/ac662e21ac0a48bbb97c9f55c2905eb4/FLAG0e100214e [2019-09-10 03:06:18,148 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 03:06:18,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2019-09-10 03:06:18,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7f997eb/ac662e21ac0a48bbb97c9f55c2905eb4/FLAG0e100214e [2019-09-10 03:06:18,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7f997eb/ac662e21ac0a48bbb97c9f55c2905eb4 [2019-09-10 03:06:18,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 03:06:18,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 03:06:18,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 03:06:18,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 03:06:18,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 03:06:18,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566837db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18, skipping insertion in model container [2019-09-10 03:06:18,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,595 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 03:06:18,615 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 03:06:18,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:06:18,815 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 03:06:18,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:06:18,851 INFO L192 MainTranslator]: Completed translation [2019-09-10 03:06:18,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18 WrapperNode [2019-09-10 03:06:18,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 03:06:18,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 03:06:18,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 03:06:18,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 03:06:18,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (1/1) ... [2019-09-10 03:06:18,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 03:06:18,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 03:06:18,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 03:06:18,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 03:06:18,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (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 [2019-09-10 03:06:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 03:06:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 03:06:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-09-10 03:06:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 03:06:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 03:06:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 03:06:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-09-10 03:06:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 03:06:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 03:06:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 03:06:19,189 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 03:06:19,189 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 03:06:19,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:06:19 BoogieIcfgContainer [2019-09-10 03:06:19,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 03:06:19,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 03:06:19,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 03:06:19,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 03:06:19,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 03:06:18" (1/3) ... [2019-09-10 03:06:19,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c1d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:06:19, skipping insertion in model container [2019-09-10 03:06:19,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:06:18" (2/3) ... [2019-09-10 03:06:19,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c1d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:06:19, skipping insertion in model container [2019-09-10 03:06:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:06:19" (3/3) ... [2019-09-10 03:06:19,198 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2019-09-10 03:06:19,208 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 03:06:19,216 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 03:06:19,235 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 03:06:19,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 03:06:19,286 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 03:06:19,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 03:06:19,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 03:06:19,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 03:06:19,287 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 03:06:19,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 03:06:19,287 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 03:06:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-10 03:06:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 03:06:19,336 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:06:19,337 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:06:19,339 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:06:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:06:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2019-09-10 03:06:19,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:06:19,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:06:19,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:06:19,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:06:19,392 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:06:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:06:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 03:06:19,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 03:06:19,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 03:06:19,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:06:19,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 03:06:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 03:06:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:06:19,528 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-09-10 03:06:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:06:19,587 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-09-10 03:06:19,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 03:06:19,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 03:06:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:06:19,599 INFO L225 Difference]: With dead ends: 27 [2019-09-10 03:06:19,599 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 03:06:19,601 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:06:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 03:06:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 03:06:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 03:06:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-10 03:06:19,637 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2019-09-10 03:06:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:06:19,638 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-10 03:06:19,638 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 03:06:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-10 03:06:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 03:06:19,640 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:06:19,640 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:06:19,640 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:06:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:06:19,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2019-09-10 03:06:19,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:06:19,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:06:19,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:06:19,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:06:19,643 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:06:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:06:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 03:06:19,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 03:06:19,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 03:06:19,708 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:06:19,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 03:06:19,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 03:06:19,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:06:19,710 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2019-09-10 03:06:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:06:19,732 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-09-10 03:06:19,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 03:06:19,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-10 03:06:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:06:19,734 INFO L225 Difference]: With dead ends: 17 [2019-09-10 03:06:19,734 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 03:06:19,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:06:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 03:06:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 03:06:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 03:06:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 03:06:19,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-10 03:06:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:06:19,737 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 03:06:19,737 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 03:06:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 03:06:19,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 03:06:19,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 03:06:19 BoogieIcfgContainer [2019-09-10 03:06:19,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 03:06:19,745 INFO L168 Benchmark]: Toolchain (without parser) took 1168.37 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 86.5 MB in the beginning and 135.2 MB in the end (delta: -48.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,746 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 104.7 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.81 ms. Allocated memory is still 138.4 MB. Free memory was 86.3 MB in the beginning and 77.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,748 INFO L168 Benchmark]: Boogie Preprocessor took 118.58 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 77.2 MB in the beginning and 176.7 MB in the end (delta: -99.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,749 INFO L168 Benchmark]: RCFGBuilder took 219.70 ms. Allocated memory is still 198.2 MB. Free memory was 176.7 MB in the beginning and 164.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,750 INFO L168 Benchmark]: TraceAbstraction took 550.62 ms. Allocated memory is still 198.2 MB. Free memory was 164.8 MB in the beginning and 135.2 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-09-10 03:06:19,753 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 138.4 MB. Free memory was 104.7 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.81 ms. Allocated memory is still 138.4 MB. Free memory was 86.3 MB in the beginning and 77.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.58 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 77.2 MB in the beginning and 176.7 MB in the end (delta: -99.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 219.70 ms. Allocated memory is still 198.2 MB. Free memory was 176.7 MB in the beginning and 164.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 550.62 ms. Allocated memory is still 198.2 MB. Free memory was 164.8 MB in the beginning and 135.2 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 2 SDslu, 102 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...