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/sum_array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:49:16,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:49:16,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:49:16,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:49:16,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:49:16,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:49:16,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:49:16,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:49:16,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:49:16,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:49:16,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:49:16,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:49:16,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:49:16,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:49:16,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:49:16,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:49:16,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:49:16,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:49:16,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:49:16,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:49:16,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:49:16,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:49:16,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:49:16,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:49:16,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:49:16,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:49:16,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:49:16,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:49:16,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:49:16,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:49:16,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:49:16,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:49:16,175 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:49:16,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:49:16,176 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:49:16,176 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:49:16,177 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:49:16,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:49:16,177 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:49:16,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:49:16,178 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:49:16,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:49:16,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:49:16,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:49:16,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:49:16,180 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:49:16,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:49:16,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:16,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:49:16,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:49:16,181 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:49:16,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:49:16,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:49:16,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:49:16,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:49:16,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:49:16,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:49:16,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:49:16,243 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:49:16,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-2.i [2019-09-10 01:49:16,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc828a54/77612cf6e97c41f09743afd76bd5668e/FLAGff88148e5 [2019-09-10 01:49:16,743 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:49:16,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i [2019-09-10 01:49:16,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc828a54/77612cf6e97c41f09743afd76bd5668e/FLAGff88148e5 [2019-09-10 01:49:17,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc828a54/77612cf6e97c41f09743afd76bd5668e [2019-09-10 01:49:17,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:49:17,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:49:17,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:17,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:49:17,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:49:17,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fd976a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17, skipping insertion in model container [2019-09-10 01:49:17,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:49:17,203 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:49:17,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:17,417 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:49:17,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:17,551 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:49:17,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17 WrapperNode [2019-09-10 01:49:17,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:17,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:49:17,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:49:17,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:49:17,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... [2019-09-10 01:49:17,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:49:17,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:49:17,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:49:17,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:49:17,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:49:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:49:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:49:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:49:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:49:18,003 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:49:18,003 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 01:49:18,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:18 BoogieIcfgContainer [2019-09-10 01:49:18,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:49:18,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:49:18,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:49:18,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:49:18,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:49:17" (1/3) ... [2019-09-10 01:49:18,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6465d337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:18, skipping insertion in model container [2019-09-10 01:49:18,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:17" (2/3) ... [2019-09-10 01:49:18,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6465d337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:18, skipping insertion in model container [2019-09-10 01:49:18,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:18" (3/3) ... [2019-09-10 01:49:18,013 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2019-09-10 01:49:18,023 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:49:18,031 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:49:18,048 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:49:18,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:49:18,077 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:49:18,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:49:18,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:49:18,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:49:18,077 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:49:18,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:49:18,078 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:49:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-09-10 01:49:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:49:18,102 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:18,103 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:18,105 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1823924036, now seen corresponding path program 1 times [2019-09-10 01:49:18,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:18,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:18,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,159 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:18,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:18,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:49:18,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:18,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:18,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:18,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:18,294 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-09-10 01:49:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:18,316 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-09-10 01:49:18,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:18,317 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 01:49:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:18,330 INFO L225 Difference]: With dead ends: 32 [2019-09-10 01:49:18,330 INFO L226 Difference]: Without dead ends: 27 [2019-09-10 01:49:18,336 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 [2019-09-10 01:49:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-10 01:49:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-10 01:49:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-10 01:49:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-09-10 01:49:18,390 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2019-09-10 01:49:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:18,390 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-09-10 01:49:18,390 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-09-10 01:49:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:49:18,392 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:18,393 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:18,393 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1169658974, now seen corresponding path program 1 times [2019-09-10 01:49:18,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:18,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:18,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,398 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:18,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:18,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:49:18,679 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:18,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:49:18,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:49:18,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:49:18,683 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 4 states. [2019-09-10 01:49:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:18,818 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-10 01:49:18,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:49:18,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-10 01:49:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:18,822 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:49:18,823 INFO L226 Difference]: Without dead ends: 39 [2019-09-10 01:49:18,823 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 [2019-09-10 01:49:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-10 01:49:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-09-10 01:49:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 01:49:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-09-10 01:49:18,834 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2019-09-10 01:49:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:18,835 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-09-10 01:49:18,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:49:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-09-10 01:49:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:49:18,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:18,836 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:18,837 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1835570138, now seen corresponding path program 1 times [2019-09-10 01:49:18,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:18,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:18,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:18,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:19,789 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 33 [2019-09-10 01:49:20,023 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 37 [2019-09-10 01:49:20,291 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2019-09-10 01:49:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:20,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:49:20,350 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:49:20,351 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-09-10 01:49:20,355 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [17], [19], [23], [29], [31], [35], [37], [41], [47], [49], [51], [55], [63], [73], [76], [78], [84], [85], [86], [88] [2019-09-10 01:49:20,404 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:49:20,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:49:20,473 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:49:20,476 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-09-10 01:49:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:20,483 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:49:20,519 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:49:20,520 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:49:20,522 INFO L420 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-09-10 01:49:20,522 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:49:20,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:49:20,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-10 01:49:20,523 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:20,524 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:20,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:20,525 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 2 states. [2019-09-10 01:49:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:20,525 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:49:20,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:20,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-10 01:49:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:20,526 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:49:20,526 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:49:20,527 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:49:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:49:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:49:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:49:20,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-09-10 01:49:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:20,528 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:49:20,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:49:20,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:49:20,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:49:20 BoogieIcfgContainer [2019-09-10 01:49:20,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:49:20,536 INFO L168 Benchmark]: Toolchain (without parser) took 3371.42 ms. Allocated memory was 134.7 MB in the beginning and 230.2 MB in the end (delta: 95.4 MB). Free memory was 90.7 MB in the beginning and 91.0 MB in the end (delta: -344.8 kB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,538 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.15 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.5 MB in the beginning and 178.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,540 INFO L168 Benchmark]: Boogie Preprocessor took 39.69 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 176.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,541 INFO L168 Benchmark]: RCFGBuilder took 412.64 ms. Allocated memory is still 201.9 MB. Free memory was 176.6 MB in the beginning and 158.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,542 INFO L168 Benchmark]: TraceAbstraction took 2528.72 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 158.8 MB in the beginning and 91.0 MB in the end (delta: 67.7 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:20,546 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.15 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.5 MB in the beginning and 178.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.69 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 176.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.64 ms. Allocated memory is still 201.9 MB. Free memory was 176.6 MB in the beginning and 158.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2528.72 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 158.8 MB in the beginning and 91.0 MB in the end (delta: 67.7 MB). Peak memory consumption was 96.0 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, 32 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 12 SDslu, 34 SDs, 0 SdLazy, 34 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9166666666666666 AbsIntWeakeningRatio, 1.0416666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.25 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 13216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...