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/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:37:03,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:37:03,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:37:03,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:37:03,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:37:03,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:37:03,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:37:03,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:37:03,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:37:03,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:37:03,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:37:03,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:37:03,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:37:03,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:37:03,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:37:03,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:37:03,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:37:03,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:37:03,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:37:03,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:37:03,641 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 [2019-09-03 20:37:03,658 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:37:03,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:37:03,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:37:03,660 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:37:03,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:37:03,662 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:37:03,662 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:37:03,662 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:37:03,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:37:03,663 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:37:03,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:37:03,666 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:37:03,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:37:03,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:37:03,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:37:03,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:37:03,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:37:03,667 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:37:03,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:37:03,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:37:03,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:37:03,669 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:37:03,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:37:03,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:37:03,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:37:03,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:37:03,670 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:37:03,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:37:03,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:37:03,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:37:03,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:37:03,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:37:03,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:37:03,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:37:03,758 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:37:03,759 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2019-09-03 20:37:03,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac77528a/d8e596c5d75c4451835ddc9afc03003a/FLAG3c808fbca [2019-09-03 20:37:04,316 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:37:04,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2019-09-03 20:37:04,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac77528a/d8e596c5d75c4451835ddc9afc03003a/FLAG3c808fbca [2019-09-03 20:37:04,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac77528a/d8e596c5d75c4451835ddc9afc03003a [2019-09-03 20:37:04,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:37:04,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:37:04,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:04,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:37:04,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:37:04,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:04,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf24ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04, skipping insertion in model container [2019-09-03 20:37:04,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:04,687 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:37:04,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:37:04,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:04,916 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:37:04,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:04,961 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:37:04,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04 WrapperNode [2019-09-03 20:37:04,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:04,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:37:04,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:37:04,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:37:05,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (1/1) ... [2019-09-03 20:37:05,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:37:05,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:37:05,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:37:05,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:37:05,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (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 [2019-09-03 20:37:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:37:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:37:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:37:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:37:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:37:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:37:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:37:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:37:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:37:05,422 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:37:05,423 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-03 20:37:05,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:05 BoogieIcfgContainer [2019-09-03 20:37:05,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:37:05,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:37:05,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:37:05,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:37:05,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:37:04" (1/3) ... [2019-09-03 20:37:05,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e04d2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:05, skipping insertion in model container [2019-09-03 20:37:05,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:04" (2/3) ... [2019-09-03 20:37:05,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e04d2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:05, skipping insertion in model container [2019-09-03 20:37:05,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:05" (3/3) ... [2019-09-03 20:37:05,441 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2019-09-03 20:37:05,456 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:37:05,466 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:37:05,499 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:37:05,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:37:05,522 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:37:05,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:37:05,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:37:05,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:37:05,523 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:37:05,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:37:05,524 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:37:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-03 20:37:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:37:05,546 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:05,548 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:37:05,550 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:05,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1522547275, now seen corresponding path program 1 times [2019-09-03 20:37:05,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:05,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:05,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:05,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:05,599 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:05,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:37:05,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:37:05,683 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:05,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:37:05,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:37:05,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:05,702 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-03 20:37:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:05,716 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-03 20:37:05,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:37:05,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-03 20:37:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:05,725 INFO L225 Difference]: With dead ends: 22 [2019-09-03 20:37:05,726 INFO L226 Difference]: Without dead ends: 15 [2019-09-03 20:37:05,728 INFO L628 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 [2019-09-03 20:37:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-03 20:37:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-03 20:37:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-03 20:37:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-03 20:37:05,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2019-09-03 20:37:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:05,759 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-03 20:37:05,759 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:37:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-03 20:37:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:37:05,760 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:05,761 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:37:05,761 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:05,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1742365231, now seen corresponding path program 1 times [2019-09-03 20:37:05,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:05,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:05,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:05,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:05,763 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:05,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:37:05,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:37:05,878 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:05,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:37:05,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:37:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:37:05,881 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-09-03 20:37:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:05,913 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-09-03 20:37:05,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:37:05,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-03 20:37:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:05,914 INFO L225 Difference]: With dead ends: 13 [2019-09-03 20:37:05,914 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:37:05,915 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:37:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:37:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:37:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:37:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:37:05,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-03 20:37:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:05,917 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:37:05,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:37:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:37:05,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:37:05,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:37:05 BoogieIcfgContainer [2019-09-03 20:37:05,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:37:05,926 INFO L168 Benchmark]: Toolchain (without parser) took 1255.38 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 88.0 MB in the beginning and 137.6 MB in the end (delta: -49.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:05,927 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory is still 106.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:37:05,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.64 ms. Allocated memory is still 140.5 MB. Free memory was 88.0 MB in the beginning and 77.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:05,929 INFO L168 Benchmark]: Boogie Preprocessor took 140.43 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 77.6 MB in the beginning and 176.7 MB in the end (delta: -99.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:05,930 INFO L168 Benchmark]: RCFGBuilder took 321.62 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 162.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:05,931 INFO L168 Benchmark]: TraceAbstraction took 497.51 ms. Allocated memory is still 199.8 MB. Free memory was 162.7 MB in the beginning and 137.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:05,934 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory is still 106.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.64 ms. Allocated memory is still 140.5 MB. Free memory was 88.0 MB in the beginning and 77.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.43 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 77.6 MB in the beginning and 176.7 MB in the end (delta: -99.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.62 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 162.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 497.51 ms. Allocated memory is still 199.8 MB. Free memory was 162.7 MB in the beginning and 137.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 22 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 25 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...