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/ldv-regression/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:35,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:35,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:35,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:35,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:35,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:35,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:35,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:35,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:35,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:35,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:35,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:35,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:35,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:35,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:35,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:35,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:35,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:35,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:35,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:35,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:35,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:35,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:35,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:35,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:28:35,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:35,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:35,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:35,299 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 [2019-09-20 13:28:35,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:35,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:35,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:35,313 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:35,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:35,314 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:35,315 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:35,315 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:35,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:35,315 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:35,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:35,316 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:35,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:35,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:35,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:35,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:35,318 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:35,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:35,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:35,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:35,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:35,319 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:35,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:35,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:35,319 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:35,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:35,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:35,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:35,364 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:35,364 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:35,365 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2019-09-20 13:28:35,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28398638b/2d5bb5218c4b4d71b68cf32108b42306/FLAG47c0efd38 [2019-09-20 13:28:35,825 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:35,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test05.c [2019-09-20 13:28:35,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28398638b/2d5bb5218c4b4d71b68cf32108b42306/FLAG47c0efd38 [2019-09-20 13:28:36,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28398638b/2d5bb5218c4b4d71b68cf32108b42306 [2019-09-20 13:28:36,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:36,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:36,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:36,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:36,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:36,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7354cb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36, skipping insertion in model container [2019-09-20 13:28:36,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,262 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:36,282 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:36,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:36,461 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:36,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:36,494 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:36,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36 WrapperNode [2019-09-20 13:28:36,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:36,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:36,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:36,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:36,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (1/1) ... [2019-09-20 13:28:36,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:36,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:36,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:36,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:36,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (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 [2019-09-20 13:28:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-09-20 13:28:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-20 13:28:36,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:36,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-20 13:28:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:37,005 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:37,006 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:37,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:37 BoogieIcfgContainer [2019-09-20 13:28:37,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:37,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:37,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:37,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:36" (1/3) ... [2019-09-20 13:28:37,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790fe707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:37, skipping insertion in model container [2019-09-20 13:28:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:36" (2/3) ... [2019-09-20 13:28:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790fe707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:37, skipping insertion in model container [2019-09-20 13:28:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:37" (3/3) ... [2019-09-20 13:28:37,015 INFO L109 eAbstractionObserver]: Analyzing ICFG test05.c [2019-09-20 13:28:37,024 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:37,031 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:37,052 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:37,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:37,078 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:37,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:37,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:37,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:37,078 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:37,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:37,079 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-20 13:28:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:28:37,098 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:37,099 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:37,101 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash -685779266, now seen corresponding path program 1 times [2019-09-20 13:28:37,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:37,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:37,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,155 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:37,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:37,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:37,348 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:37,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:37,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:37,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:37,370 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-09-20 13:28:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:37,435 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-09-20 13:28:37,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:37,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-20 13:28:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:37,446 INFO L225 Difference]: With dead ends: 27 [2019-09-20 13:28:37,446 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:28:37,448 INFO L636 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 [2019-09-20 13:28:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:28:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:28:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:28:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-09-20 13:28:37,484 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-09-20 13:28:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:37,485 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-09-20 13:28:37,485 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-09-20 13:28:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-20 13:28:37,486 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:37,487 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:37,487 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 636648720, now seen corresponding path program 1 times [2019-09-20 13:28:37,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:37,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:37,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,491 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:37,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:37,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:37,608 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:37,610 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:37,611 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 5 states. [2019-09-20 13:28:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:37,634 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-09-20 13:28:37,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:37,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-09-20 13:28:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:37,637 INFO L225 Difference]: With dead ends: 21 [2019-09-20 13:28:37,637 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:28:37,639 INFO L636 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 [2019-09-20 13:28:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:28:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:28:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:28:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-09-20 13:28:37,646 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2019-09-20 13:28:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:37,647 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-09-20 13:28:37,648 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-09-20 13:28:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:28:37,649 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:37,650 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:37,650 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:37,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1738724303, now seen corresponding path program 1 times [2019-09-20 13:28:37,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:37,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:37,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:37,653 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:37,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:37,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:28:37,976 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:37,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:28:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:28:37,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:28:37,979 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 10 states. [2019-09-20 13:28:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:38,250 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-09-20 13:28:38,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:28:38,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-09-20 13:28:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:38,251 INFO L225 Difference]: With dead ends: 19 [2019-09-20 13:28:38,251 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:38,252 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-20 13:28:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:38,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-20 13:28:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:38,256 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:38,256 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:28:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:38,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:38,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:38 BoogieIcfgContainer [2019-09-20 13:28:38,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:38,267 INFO L168 Benchmark]: Toolchain (without parser) took 2020.43 ms. Allocated memory was 139.5 MB in the beginning and 223.3 MB in the end (delta: 83.9 MB). Free memory was 87.1 MB in the beginning and 191.1 MB in the end (delta: -104.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,269 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.14 ms. Allocated memory is still 139.5 MB. Free memory was 86.9 MB in the beginning and 76.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,273 INFO L168 Benchmark]: Boogie Preprocessor took 117.54 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 76.5 MB in the beginning and 175.9 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,275 INFO L168 Benchmark]: RCFGBuilder took 394.57 ms. Allocated memory is still 199.2 MB. Free memory was 175.9 MB in the beginning and 156.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,276 INFO L168 Benchmark]: TraceAbstraction took 1255.05 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 156.5 MB in the beginning and 191.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:38,287 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 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.14 ms. Allocated memory is still 139.5 MB. Free memory was 86.9 MB in the beginning and 76.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.54 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 76.5 MB in the beginning and 175.9 MB in the end (delta: -99.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.57 ms. Allocated memory is still 199.2 MB. Free memory was 175.9 MB in the beginning and 156.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1255.05 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 156.5 MB in the beginning and 191.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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 5 procedures, 25 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 10 SDslu, 150 SDs, 0 SdLazy, 99 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 6277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...