/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:12:06,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:12:06,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:12:06,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:12:06,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:12:06,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:12:06,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:12:06,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:12:06,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:12:06,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:12:06,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:12:06,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:12:06,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:12:06,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:12:06,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:12:06,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:12:06,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:12:06,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:12:06,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:12:06,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:12:06,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:12:06,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:12:06,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:12:06,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:12:06,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:12:06,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:12:06,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:12:06,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:12:06,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:12:06,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:12:06,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:12:06,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:12:06,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:12:06,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:12:06,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:12:06,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:12:06,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:12:06,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:12:06,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:12:06,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:12:06,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:12:06,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:12:06,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:12:06,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:12:06,509 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:12:06,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:12:06,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:12:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:12:06,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:12:06,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:12:06,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:12:06,510 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:12:06,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:12:06,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:12:06,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:12:06,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:12:06,964 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:12:06,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-04 16:12:07,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbae15a8e/50a8a2be18c44d038a8cab42793f65e2/FLAG9aaa0880a [2020-09-04 16:12:07,588 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:12:07,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-04 16:12:07,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbae15a8e/50a8a2be18c44d038a8cab42793f65e2/FLAG9aaa0880a [2020-09-04 16:12:07,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbae15a8e/50a8a2be18c44d038a8cab42793f65e2 [2020-09-04 16:12:07,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:12:07,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:12:07,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:12:07,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:12:07,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:12:07,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:12:07" (1/1) ... [2020-09-04 16:12:07,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:07, skipping insertion in model container [2020-09-04 16:12:07,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:12:07" (1/1) ... [2020-09-04 16:12:07,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:12:08,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:12:08,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:12:08,229 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:12:08,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:12:08,266 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:12:08,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08 WrapperNode [2020-09-04 16:12:08,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:12:08,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:12:08,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:12:08,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:12:08,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... [2020-09-04 16:12:08,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:12:08,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:12:08,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:12:08,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:12:08,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:12:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:12:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:12:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-04 16:12:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:12:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:12:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:12:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-04 16:12:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:12:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:12:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:12:08,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:12:08,696 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:12:08,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:12:08 BoogieIcfgContainer [2020-09-04 16:12:08,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:12:08,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:12:08,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:12:08,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:12:08,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:12:07" (1/3) ... [2020-09-04 16:12:08,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b2ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:12:08, skipping insertion in model container [2020-09-04 16:12:08,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:12:08" (2/3) ... [2020-09-04 16:12:08,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b2ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:12:08, skipping insertion in model container [2020-09-04 16:12:08,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:12:08" (3/3) ... [2020-09-04 16:12:08,712 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-09-04 16:12:08,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:12:08,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:12:08,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:12:08,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:12:08,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:12:08,792 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:12:08,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:12:08,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:12:08,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:12:08,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:12:08,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:12:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-04 16:12:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 16:12:08,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:12:08,848 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] [2020-09-04 16:12:08,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:12:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:12:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-09-04 16:12:08,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:12:08,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773476589] [2020-09-04 16:12:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:12:08,933 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:12:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:12:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 16:12:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:12:09,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773476589] [2020-09-04 16:12:09,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:12:09,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:12:09,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336929863] [2020-09-04 16:12:09,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:12:09,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:12:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:12:09,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:12:09,283 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-09-04 16:12:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:12:09,535 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-04 16:12:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:12:09,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-04 16:12:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:12:09,552 INFO L225 Difference]: With dead ends: 56 [2020-09-04 16:12:09,552 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 16:12:09,557 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 [2020-09-04 16:12:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 16:12:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-04 16:12:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 16:12:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-09-04 16:12:09,621 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-09-04 16:12:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:12:09,621 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-09-04 16:12:09,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:12:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-09-04 16:12:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 16:12:09,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:12:09,625 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] [2020-09-04 16:12:09,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:12:09,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:12:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:12:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-09-04 16:12:09,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:12:09,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302076024] [2020-09-04 16:12:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:12:09,629 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:12:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:12:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 16:12:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:12:09,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302076024] [2020-09-04 16:12:09,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:12:09,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:12:09,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635509856] [2020-09-04 16:12:09,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:12:09,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:12:09,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:12:09,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:12:09,725 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-09-04 16:12:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:12:09,822 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-04 16:12:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:12:09,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-04 16:12:09,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:12:09,824 INFO L225 Difference]: With dead ends: 56 [2020-09-04 16:12:09,824 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 16:12:09,827 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 [2020-09-04 16:12:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 16:12:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 16:12:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 16:12:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-04 16:12:09,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-09-04 16:12:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:12:09,838 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-04 16:12:09,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:12:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-04 16:12:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 16:12:09,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:12:09,840 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] [2020-09-04 16:12:09,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:12:09,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:12:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:12:09,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-09-04 16:12:09,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:12:09,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372837455] [2020-09-04 16:12:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:12:09,845 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:12:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:12:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 16:12:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 16:12:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:12:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 16:12:10,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372837455] [2020-09-04 16:12:10,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:12:10,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 16:12:10,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796864110] [2020-09-04 16:12:10,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 16:12:10,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:12:10,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 16:12:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:12:10,107 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 10 states. [2020-09-04 16:12:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:12:10,292 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-09-04 16:12:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:12:10,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-09-04 16:12:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:12:10,294 INFO L225 Difference]: With dead ends: 32 [2020-09-04 16:12:10,294 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:12:10,295 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 [2020-09-04 16:12:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:12:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:12:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:12:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:12:10,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-04 16:12:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:12:10,297 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:12:10,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 16:12:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:12:10,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:12:10,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:12:10,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:12:10,929 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,930 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,930 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,930 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,930 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,931 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:12:10,931 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-09-04 16:12:10,931 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-09-04 16:12:10,931 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-04 16:12:10,932 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-09-04 16:12:10,932 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-09-04 16:12:10,932 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-09-04 16:12:10,932 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 45) the Hoare annotation is: true [2020-09-04 16:12:10,932 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 45) the Hoare annotation is: true [2020-09-04 16:12:10,933 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))) [2020-09-04 16:12:10,933 INFO L271 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: true [2020-09-04 16:12:10,933 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) the Hoare annotation is: false [2020-09-04 16:12:10,934 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-09-04 16:12:10,934 INFO L271 CegarLoopResult]: At program point L28(lines 28 32) the Hoare annotation is: true [2020-09-04 16:12:10,934 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: false [2020-09-04 16:12:10,934 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))) [2020-09-04 16:12:10,935 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-09-04 16:12:10,935 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))) [2020-09-04 16:12:10,935 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-09-04 16:12:10,935 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))) [2020-09-04 16:12:10,936 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) (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0) (<= main_~result~0 .cse0))) [2020-09-04 16:12:10,936 INFO L264 CegarLoopResult]: At program point additionFINAL(lines 13 23) the Hoare annotation is: (and (or (<= |addition_#in~n| 0) (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (<= .cse0 |addition_#res|) (<= |addition_#res| .cse0)))) (let ((.cse1 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (and .cse1 (= |addition_#in~m| |addition_#res|) .cse2) (and .cse1 .cse2 (not (= |addition_#in~n| 0)))))) [2020-09-04 16:12:10,936 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,937 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,937 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,937 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,938 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,938 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,938 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 (= |addition_#in~n| 0))) [2020-09-04 16:12:10,938 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse1 (= |addition_#in~m| addition_~m))) (or (and .cse0 .cse1 (<= |addition_#in~n| 0)) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and (<= .cse2 |addition_#t~ret0|) .cse0 .cse1 (<= |addition_#t~ret0| .cse2))))) (not (= |addition_#in~n| 0))) [2020-09-04 16:12:10,939 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse1 (= |addition_#in~m| addition_~m))) (or (and .cse0 .cse1 (<= |addition_#in~n| 0)) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and (<= .cse2 |addition_#t~ret0|) .cse0 .cse1 (<= |addition_#t~ret0| .cse2))))) (not (= |addition_#in~n| 0))) [2020-09-04 16:12:10,939 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |addition_#in~n| 0) (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-09-04 16:12:10,939 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (or (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (<= .cse0 |addition_#t~ret0|) (<= .cse0 |addition_#res|) (<= |addition_#t~ret0| .cse0) (<= |addition_#res| .cse0))) (<= |addition_#in~n| 0)) (not (= |addition_#in~n| 0))) [2020-09-04 16:12:10,940 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-09-04 16:12:10,940 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)) [2020-09-04 16:12:10,940 INFO L264 CegarLoopResult]: At program point L13(lines 13 23) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2020-09-04 16:12:10,940 INFO L264 CegarLoopResult]: At program point additionEXIT(lines 13 23) the Hoare annotation is: (and (or (<= |addition_#in~n| 0) (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (<= .cse0 |addition_#res|) (<= |addition_#res| .cse0)))) (let ((.cse1 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (and .cse1 (= |addition_#in~m| |addition_#res|) .cse2) (and .cse1 .cse2 (not (= |addition_#in~n| 0)))))) [2020-09-04 16:12:10,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:12:10 BoogieIcfgContainer [2020-09-04 16:12:10,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:12:10,980 INFO L168 Benchmark]: Toolchain (without parser) took 3021.60 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 102.0 MB in the beginning and 84.6 MB in the end (delta: 17.4 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:12:10,982 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:12:10,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.25 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:12:10,987 INFO L168 Benchmark]: Boogie Preprocessor took 104.71 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:12:10,988 INFO L168 Benchmark]: RCFGBuilder took 330.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:12:10,989 INFO L168 Benchmark]: TraceAbstraction took 2271.61 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 165.8 MB in the beginning and 84.6 MB in the end (delta: 81.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:12:10,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.25 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.71 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.31 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2271.61 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 165.8 MB in the beginning and 84.6 MB in the end (delta: 81.2 MB). Peak memory consumption was 114.2 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) <= 0 || (\old(n) + \old(m) <= \result && \result <= \old(n) + \old(m))) && (((\old(n) == n && \old(m) == \result) && \old(m) == m) || ((\old(n) == n && \old(m) == m) && !(\old(n) == 0))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, 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, 379 HoareAnnotationTreeSize, 74 FomulaSimplifications, 149 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...