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/array-examples/standard_copy5_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:50,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:50,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:50,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:50,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:50,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:50,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:50,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:50,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:50,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:50,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:50,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:50,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:50,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:50,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:50,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:50,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:50,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:50,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:50,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:50,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:50,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:50,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:50,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:50,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:50,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:50,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:50,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:50,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:50,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:50,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:50,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:50,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:50,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:50,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:50,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:50,384 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 [2019-10-02 16:29:50,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:50,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:50,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:50,415 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:50,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:50,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:50,419 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:50,419 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:50,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:50,419 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:50,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:50,422 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:50,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:50,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:50,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:50,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:50,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:50,423 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:50,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:50,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:50,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:50,425 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:50,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:50,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:50,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:50,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:50,426 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:50,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:50,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:50,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:50,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:50,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:50,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:50,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:50,482 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:50,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2019-10-02 16:29:50,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1e2ee28/c51b5070ea27443eb7bad4dbeee21dbc/FLAGbf2768162 [2019-10-02 16:29:50,997 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:50,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2019-10-02 16:29:51,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1e2ee28/c51b5070ea27443eb7bad4dbeee21dbc/FLAGbf2768162 [2019-10-02 16:29:51,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1e2ee28/c51b5070ea27443eb7bad4dbeee21dbc [2019-10-02 16:29:51,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:51,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:51,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:51,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:51,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:51,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af509e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,406 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:51,430 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:51,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:51,600 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:51,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:51,735 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:51,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51 WrapperNode [2019-10-02 16:29:51,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:51,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:51,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:51,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:51,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:51,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:51,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (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 [2019-10-02 16:29:51,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:51,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:51,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:51,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:52,244 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:52,245 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-02 16:29:52,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:52 BoogieIcfgContainer [2019-10-02 16:29:52,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:52,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:52,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:52,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:52,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:51" (1/3) ... [2019-10-02 16:29:52,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284292e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:52, skipping insertion in model container [2019-10-02 16:29:52,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (2/3) ... [2019-10-02 16:29:52,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284292e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:52, skipping insertion in model container [2019-10-02 16:29:52,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:52" (3/3) ... [2019-10-02 16:29:52,254 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-1.i [2019-10-02 16:29:52,265 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:52,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:52,289 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:52,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:52,312 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:52,312 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:52,312 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:52,312 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:52,312 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:52,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:52,312 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-10-02 16:29:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:52,337 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,338 INFO L411 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] [2019-10-02 16:29:52,340 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2095174276, now seen corresponding path program 1 times [2019-10-02 16:29:52,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,401 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:52,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:52,499 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,504 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:52,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:52,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,522 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-10-02 16:29:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,537 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-02 16:29:52,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:52,539 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-02 16:29:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,547 INFO L225 Difference]: With dead ends: 39 [2019-10-02 16:29:52,547 INFO L226 Difference]: Without dead ends: 34 [2019-10-02 16:29:52,549 INFO L640 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 [2019-10-02 16:29:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-02 16:29:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-02 16:29:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-02 16:29:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-10-02 16:29:52,580 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 23 [2019-10-02 16:29:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,581 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-10-02 16:29:52,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-10-02 16:29:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:52,582 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,582 INFO L411 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] [2019-10-02 16:29:52,583 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1625097866, now seen corresponding path program 1 times [2019-10-02 16:29:52,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,586 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:52,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,650 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,653 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2019-10-02 16:29:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,676 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-10-02 16:29:52,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-02 16:29:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,678 INFO L225 Difference]: With dead ends: 36 [2019-10-02 16:29:52,678 INFO L226 Difference]: Without dead ends: 36 [2019-10-02 16:29:52,679 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-02 16:29:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-10-02 16:29:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-02 16:29:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-02 16:29:52,689 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2019-10-02 16:29:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,689 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-02 16:29:52,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-10-02 16:29:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:29:52,690 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,691 INFO L411 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] [2019-10-02 16:29:52,691 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1623092332, now seen corresponding path program 1 times [2019-10-02 16:29:52,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,694 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:52,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,752 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,754 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-10-02 16:29:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,840 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-10-02 16:29:52,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-02 16:29:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,842 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:29:52,842 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 16:29:52,843 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 16:29:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-10-02 16:29:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-02 16:29:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-10-02 16:29:52,850 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2019-10-02 16:29:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,851 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-10-02 16:29:52,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-10-02 16:29:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-02 16:29:52,852 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,852 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:52,853 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1928668694, now seen corresponding path program 1 times [2019-10-02 16:29:52,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,856 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 16:29:52,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:52,967 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:52,968 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-10-02 16:29:52,971 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [53], [55], [57], [61], [67], [69], [71], [75], [81], [83], [85], [89], [97], [107], [110], [112], [118], [119], [120], [122] [2019-10-02 16:29:53,003 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:53,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:53,083 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:53,085 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 41 variables. [2019-10-02 16:29:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:53,089 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:53,142 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:53,142 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:53,145 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-10-02 16:29:53,145 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:53,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:53,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:53,146 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:53,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:53,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:53,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:53,148 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 2 states. [2019-10-02 16:29:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:53,149 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:53,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:53,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-10-02 16:29:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:53,150 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:53,150 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:53,151 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:53,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:53,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-10-02 16:29:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:53,152 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:53,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:53,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:53,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:53 BoogieIcfgContainer [2019-10-02 16:29:53,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:53,161 INFO L168 Benchmark]: Toolchain (without parser) took 1771.50 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 86.3 MB in the beginning and 98.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,162 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.64 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 86.1 MB in the beginning and 176.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,164 INFO L168 Benchmark]: Boogie Preprocessor took 43.47 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,165 INFO L168 Benchmark]: RCFGBuilder took 465.81 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 154.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,166 INFO L168 Benchmark]: TraceAbstraction took 911.51 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 98.5 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:53,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.64 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 86.1 MB in the beginning and 176.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.47 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.81 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 154.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 911.51 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 98.5 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 39 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 118 SDtfs, 6 SDslu, 56 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, 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, 0.9044117647058824 AbsIntWeakeningRatio, 1.0588235294117647 AbsIntAvgWeakeningVarsNumRemoved, 0.17647058823529413 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 2996 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...