/usr/bin/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:04:55,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:04:55,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:04:55,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:04:55,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:04:55,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:04:55,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:04:55,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:04:55,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:04:55,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:04:55,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:04:55,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:04:55,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:04:55,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:04:55,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:04:55,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:04:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:04:55,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:04:55,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:04:55,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:04:55,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:04:55,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:04:55,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:04:55,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:04:55,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:04:55,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:04:55,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:04:55,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:04:55,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:04:55,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:04:55,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:04:55,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:04:55,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:04:55,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:04:55,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:04:55,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:04:55,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:04:55,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:04:55,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:04:55,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:04:55,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:04:55,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:04:55,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:04:55,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:04:55,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:04:55,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:04:55,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:04:55,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:04:55,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:04:55,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:04:55,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:04:55,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:04:55,569 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:04:55,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:04:55,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:04:55,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:04:55,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:04:55,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:04:55,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:04:55,574 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:04:55,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:04:55,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:04:55,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:04:55,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:04:55,868 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:04:55,869 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-17 17:04:55,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1107c0797/65ac9c2649f24d799ac02c45b325f08b/FLAG744d899b3 [2020-07-17 17:04:56,375 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:04:56,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-17 17:04:56,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1107c0797/65ac9c2649f24d799ac02c45b325f08b/FLAG744d899b3 [2020-07-17 17:04:56,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1107c0797/65ac9c2649f24d799ac02c45b325f08b [2020-07-17 17:04:56,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:04:56,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:04:56,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:56,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:04:56,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:04:56,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:56,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f736972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56, skipping insertion in model container [2020-07-17 17:04:56,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:56,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:04:56,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:04:56,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:56,974 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:04:56,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:56,999 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:04:57,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56 WrapperNode [2020-07-17 17:04:57,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:57,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:04:57,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:04:57,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:04:57,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (1/1) ... [2020-07-17 17:04:57,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:04:57,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:04:57,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:04:57,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:04:57,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (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 [2020-07-17 17:04:57,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:04:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:04:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-17 17:04:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:04:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:04:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:04:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-17 17:04:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:04:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:04:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:04:57,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:04:57,374 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:04:57,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:57 BoogieIcfgContainer [2020-07-17 17:04:57,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:04:57,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:04:57,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:04:57,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:04:57,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:04:56" (1/3) ... [2020-07-17 17:04:57,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a9f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:57, skipping insertion in model container [2020-07-17 17:04:57,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:56" (2/3) ... [2020-07-17 17:04:57,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a9f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:57, skipping insertion in model container [2020-07-17 17:04:57,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:57" (3/3) ... [2020-07-17 17:04:57,391 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-07-17 17:04:57,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:04:57,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:04:57,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:04:57,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:04:57,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:04:57,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:04:57,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:04:57,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:04:57,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:04:57,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:04:57,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:04:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-17 17:04:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 17:04:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:57,499 INFO L422 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] [2020-07-17 17:04:57,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-07-17 17:04:57,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:57,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136940414] [2020-07-17 17:04:57,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:57,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136940414] [2020-07-17 17:04:57,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:57,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:04:57,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365323427] [2020-07-17 17:04:57,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:04:57,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:57,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:04:57,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:04:57,871 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-07-17 17:04:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:58,138 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-07-17 17:04:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 17:04:58,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-17 17:04:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:58,152 INFO L225 Difference]: With dead ends: 56 [2020-07-17 17:04:58,152 INFO L226 Difference]: Without dead ends: 37 [2020-07-17 17:04:58,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:04:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-17 17:04:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-17 17:04:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-17 17:04:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-07-17 17:04:58,210 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-07-17 17:04:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:58,211 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-07-17 17:04:58,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:04:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-17 17:04:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 17:04:58,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:58,214 INFO L422 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] [2020-07-17 17:04:58,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:04:58,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-07-17 17:04:58,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:58,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033407019] [2020-07-17 17:04:58,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:58,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033407019] [2020-07-17 17:04:58,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:58,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:04:58,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894412505] [2020-07-17 17:04:58,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:04:58,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:04:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:04:58,367 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-07-17 17:04:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:58,484 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-07-17 17:04:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:04:58,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-07-17 17:04:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:58,486 INFO L225 Difference]: With dead ends: 56 [2020-07-17 17:04:58,486 INFO L226 Difference]: Without dead ends: 32 [2020-07-17 17:04:58,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:04:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-17 17:04:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-17 17:04:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 17:04:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-17 17:04:58,498 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-07-17 17:04:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:58,499 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-17 17:04:58,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:04:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-17 17:04:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 17:04:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:58,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-07-17 17:04:58,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:04:58,502 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-07-17 17:04:58,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:58,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194255377] [2020-07-17 17:04:58,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 17:04:58,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194255377] [2020-07-17 17:04:58,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:04:58,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 17:04:58,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292952074] [2020-07-17 17:04:58,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:04:58,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:58,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:04:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:04:58,786 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 10 states. [2020-07-17 17:04:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:58,950 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-17 17:04:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:04:58,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-17 17:04:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:58,951 INFO L225 Difference]: With dead ends: 32 [2020-07-17 17:04:58,952 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:04:58,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:04:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:04:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:04:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:04:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:04:58,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-07-17 17:04:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:58,954 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:04:58,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:04:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:04:58,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:04:58,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:04:58,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:04:59,560 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,560 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,560 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,560 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,561 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,561 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:04:59,561 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-17 17:04:59,561 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 45) the Hoare annotation is: true [2020-07-17 17:04:59,562 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 45) the Hoare annotation is: true [2020-07-17 17:04:59,563 INFO L264 CegarLoopResult]: At program point L40(lines 40 44) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0))) [2020-07-17 17:04:59,563 INFO L271 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: true [2020-07-17 17:04:59,564 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) the Hoare annotation is: false [2020-07-17 17:04:59,564 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-07-17 17:04:59,565 INFO L271 CegarLoopResult]: At program point L28(lines 28 32) the Hoare annotation is: true [2020-07-17 17:04:59,565 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: false [2020-07-17 17:04:59,566 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0))) [2020-07-17 17:04:59,566 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-07-17 17:04:59,566 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-17 17:04:59,567 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-07-17 17:04:59,567 INFO L264 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-17 17:04:59,567 INFO L264 CegarLoopResult]: At program point L39-3(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0) (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-17 17:04:59,567 INFO L264 CegarLoopResult]: At program point additionFINAL(lines 13 23) the Hoare annotation is: (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= |addition_#res| .cse1) .cse2 (<= .cse1 |addition_#res|))) (and .cse0 .cse2 (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))))) [2020-07-17 17:04:59,568 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,568 INFO L264 CegarLoopResult]: At program point L20(lines 20 22) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,568 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,569 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,569 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,569 INFO L264 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,569 INFO L264 CegarLoopResult]: At program point L17(lines 17 19) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,570 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) .cse2 (<= |addition_#t~ret0| .cse1))) (and .cse0 .cse2 (<= |addition_#in~n| 0)))) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,570 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) .cse2 (<= |addition_#t~ret0| .cse1))) (and .cse0 .cse2 (<= |addition_#in~n| 0)))) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,570 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m)) [2020-07-17 17:04:59,571 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (let ((.cse0 (= |addition_#in~n| addition_~n))) (or (and .cse0 (<= |addition_#in~n| 0)) (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) (<= |addition_#res| .cse1) (<= .cse1 |addition_#res|) (<= |addition_#t~ret0| .cse1))))) (not (= 0 |addition_#in~n|))) [2020-07-17 17:04:59,571 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-07-17 17:04:59,571 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-07-17 17:04:59,571 INFO L264 CegarLoopResult]: At program point L13(lines 13 23) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2020-07-17 17:04:59,572 INFO L264 CegarLoopResult]: At program point additionEXIT(lines 13 23) the Hoare annotation is: (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= |addition_#res| .cse1) .cse2 (<= .cse1 |addition_#res|))) (and .cse0 .cse2 (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))))) [2020-07-17 17:04:59,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:04:59 BoogieIcfgContainer [2020-07-17 17:04:59,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:04:59,611 INFO L168 Benchmark]: Toolchain (without parser) took 2825.07 ms. Allocated memory was 144.2 MB in the beginning and 232.8 MB in the end (delta: 88.6 MB). Free memory was 101.4 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,612 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.03 ms. Allocated memory is still 144.2 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,614 INFO L168 Benchmark]: Boogie Preprocessor took 22.79 ms. Allocated memory is still 144.2 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,615 INFO L168 Benchmark]: RCFGBuilder took 355.90 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 90.2 MB in the beginning and 167.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,616 INFO L168 Benchmark]: TraceAbstraction took 2227.90 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 166.9 MB in the beginning and 91.6 MB in the end (delta: 75.3 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:59,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 213.03 ms. Allocated memory is still 144.2 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.79 ms. Allocated memory is still 144.2 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.90 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 90.2 MB in the beginning and 167.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2227.90 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 166.9 MB in the beginning and 91.6 MB in the end (delta: 75.3 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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 - ProcedureContractResult [Line: 26]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for addition Derived contract for procedure addition: (((\old(n) == n && \result <= \old(n) + \old(m)) && \old(m) == m) && \old(n) + \old(m) <= \result) || (((\old(n) == n && \old(m) == m) && \old(n) <= 0) && !(0 == \old(n))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 93 SDslu, 253 SDs, 0 SdLazy, 213 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 74 PreInvPairs, 133 NumberOfFragments, 371 HoareAnnotationTreeSize, 74 FomulaSimplifications, 149 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 125 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 8968 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...