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/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:01:27,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:01:27,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:01:27,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:01:27,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:01:27,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:01:27,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:01:27,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:01:27,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:01:27,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:01:27,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:01:27,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:01:27,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:01:27,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:01:27,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:01:27,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:01:27,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:01:27,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:01:27,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:01:27,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:01:27,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:01:27,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:01:27,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:01:27,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:01:27,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-05 13:01:27,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-05 13:01:27,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-05 13:01:27,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-05 13:01:27,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-05 13:01:27,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-05 13:01:27,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:01:27,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:01:27,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:01:27,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:01:27,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:01:27,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:01:27,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:01:27,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:01:27,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:01:27,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:01:27,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:01:27,386 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 [2019-09-05 13:01:27,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:01:27,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:01:27,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:01:27,402 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:01:27,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:01:27,403 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:01:27,404 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:01:27,404 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:01:27,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:01:27,404 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:01:27,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:01:27,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:01:27,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:01:27,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:01:27,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:01:27,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:01:27,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:01:27,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:01:27,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:01:27,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:01:27,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:01:27,408 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:01:27,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:01:27,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:01:27,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:01:27,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:01:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:01:27,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:01:27,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:01:27,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:01:27,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:01:27,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:01:27,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:01:27,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:01:27,481 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:01:27,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-05 13:01:27,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef21cd79/ad38486d9c7c417d98776b0469fb35ea/FLAG634bf07e1 [2019-09-05 13:01:27,951 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:01:27,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-05 13:01:27,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef21cd79/ad38486d9c7c417d98776b0469fb35ea/FLAG634bf07e1 [2019-09-05 13:01:28,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef21cd79/ad38486d9c7c417d98776b0469fb35ea [2019-09-05 13:01:28,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:01:28,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:01:28,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:01:28,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:01:28,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:01:28,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e08cfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28, skipping insertion in model container [2019-09-05 13:01:28,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:01:28,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:01:28,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:01:28,575 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:01:28,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:01:28,605 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:01:28,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28 WrapperNode [2019-09-05 13:01:28,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:01:28,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:01:28,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:01:28,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:01:28,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (1/1) ... [2019-09-05 13:01:28,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:01:28,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:01:28,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:01:28,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:01:28,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (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 [2019-09-05 13:01:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:01:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:01:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:01:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:01:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:01:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:01:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:01:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 13:01:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:01:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:01:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:01:28,914 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:01:28,915 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-05 13:01:28,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:01:28 BoogieIcfgContainer [2019-09-05 13:01:28,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:01:28,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:01:28,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:01:28,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:01:28,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:01:28" (1/3) ... [2019-09-05 13:01:28,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54de4e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:01:28, skipping insertion in model container [2019-09-05 13:01:28,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:01:28" (2/3) ... [2019-09-05 13:01:28,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54de4e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:01:28, skipping insertion in model container [2019-09-05 13:01:28,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:01:28" (3/3) ... [2019-09-05 13:01:28,923 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-09-05 13:01:28,933 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:01:28,940 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:01:28,956 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:01:28,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:01:28,979 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:01:28,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:01:28,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:01:28,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:01:28,980 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:01:28,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:01:28,980 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:01:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-05 13:01:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 13:01:29,000 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:01:29,000 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:01:29,002 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:01:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:01:29,008 INFO L82 PathProgramCache]: Analyzing trace with hash -741608086, now seen corresponding path program 1 times [2019-09-05 13:01:29,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:01:29,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:01:29,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:01:29,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:01:29,048 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:01:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:01:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:01:29,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:01:29,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 13:01:29,184 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:01:29,189 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:01:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:01:29,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:01:29,215 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-09-05 13:01:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:01:29,307 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-09-05 13:01:29,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 13:01:29,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-05 13:01:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:01:29,316 INFO L225 Difference]: With dead ends: 26 [2019-09-05 13:01:29,316 INFO L226 Difference]: Without dead ends: 21 [2019-09-05 13:01:29,318 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 13:01:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-05 13:01:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-05 13:01:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-05 13:01:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-05 13:01:29,348 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2019-09-05 13:01:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:01:29,349 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-05 13:01:29,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:01:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-05 13:01:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-05 13:01:29,350 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:01:29,350 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:01:29,350 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:01:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:01:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1356428647, now seen corresponding path program 1 times [2019-09-05 13:01:29,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:01:29,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:01:29,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:01:29,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:01:29,353 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:01:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:01:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:01:29,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:01:29,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 13:01:29,414 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:01:29,415 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:01:29,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:01:29,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:01:29,416 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-05 13:01:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:01:29,485 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-05 13:01:29,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 13:01:29,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-05 13:01:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:01:29,487 INFO L225 Difference]: With dead ends: 19 [2019-09-05 13:01:29,487 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:01:29,488 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 13:01:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:01:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:01:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:01:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:01:29,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-05 13:01:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:01:29,490 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:01:29,490 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:01:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:01:29,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:01:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:01:29 BoogieIcfgContainer [2019-09-05 13:01:29,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:01:29,498 INFO L168 Benchmark]: Toolchain (without parser) took 1140.49 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 86.8 MB in the beginning and 129.9 MB in the end (delta: -43.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,499 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 138.9 MB. Free memory was 86.4 MB in the beginning and 77.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,501 INFO L168 Benchmark]: Boogie Preprocessor took 111.06 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 176.7 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,502 INFO L168 Benchmark]: RCFGBuilder took 198.44 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 164.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,503 INFO L168 Benchmark]: TraceAbstraction took 579.06 ms. Allocated memory is still 198.7 MB. Free memory was 163.5 MB in the beginning and 130.5 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:01:29,507 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 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 138.9 MB. Free memory was 86.4 MB in the beginning and 77.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.06 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 176.7 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 198.44 ms. Allocated memory is still 198.7 MB. Free memory was 176.7 MB in the beginning and 164.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 579.06 ms. Allocated memory is still 198.7 MB. Free memory was 163.5 MB in the beginning and 130.5 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 0.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 14 SDslu, 82 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...