/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:21:22,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:21:22,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:21:22,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:21:22,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:21:22,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:21:22,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:21:22,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:21:22,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:21:22,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:21:22,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:21:22,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:21:22,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:21:22,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:21:22,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:21:22,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:21:22,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:21:22,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:21:22,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:21:22,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:21:22,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:21:22,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:21:22,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:21:22,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:21:22,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:21:22,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:21:22,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:21:22,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:21:22,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:21:22,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:21:22,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:21:22,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:21:22,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:21:22,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:21:22,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:21:22,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:21:22,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:21:22,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:21:22,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:21:22,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:21:22,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:21:22,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:21:22,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:21:22,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:21:22,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:21:22,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:21:22,558 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:21:22,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:21:22,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:21:22,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:21:22,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:21:22,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:21:22,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:21:22,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:21:22,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:21:22,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:21:22,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:21:22,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:21:22,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:21:22,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:21:22,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:21:22,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:21:22,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:21:22,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:21:22,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:21:22,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:21:22,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:21:22,999 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:21:23,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition01-2.c [2020-12-23 09:21:23,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/034ce2183/36276002d2bd4b54a0e8632f1ebc52b5/FLAG7207b84ed [2020-12-23 09:21:23,729 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:21:23,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Addition01-2.c [2020-12-23 09:21:23,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/034ce2183/36276002d2bd4b54a0e8632f1ebc52b5/FLAG7207b84ed [2020-12-23 09:21:24,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/034ce2183/36276002d2bd4b54a0e8632f1ebc52b5 [2020-12-23 09:21:24,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:21:24,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:21:24,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:21:24,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:21:24,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:21:24,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56993c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24, skipping insertion in model container [2020-12-23 09:21:24,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:21:24,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:21:24,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2020-12-23 09:21:24,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:21:24,310 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:21:24,330 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2020-12-23 09:21:24,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:21:24,348 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:21:24,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24 WrapperNode [2020-12-23 09:21:24,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:21:24,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:21:24,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:21:24,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:21:24,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:21:24,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:21:24,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:21:24,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:21:24,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... [2020-12-23 09:21:24,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:21:24,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:21:24,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:21:24,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:21:24,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-12-23 09:21:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-12-23 09:21:24,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:21:24,969 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 09:21:24,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:21:24 BoogieIcfgContainer [2020-12-23 09:21:24,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:21:24,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:21:24,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:21:24,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:21:24,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:21:24" (1/3) ... [2020-12-23 09:21:24,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272842e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:21:24, skipping insertion in model container [2020-12-23 09:21:24,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:21:24" (2/3) ... [2020-12-23 09:21:24,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272842e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:21:24, skipping insertion in model container [2020-12-23 09:21:24,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:21:24" (3/3) ... [2020-12-23 09:21:24,981 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-12-23 09:21:24,989 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:21:24,994 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:21:25,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:21:25,073 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:21:25,073 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:21:25,073 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:21:25,074 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:21:25,074 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:21:25,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:21:25,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:21:25,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:21:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-23 09:21:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 09:21:25,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:21:25,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:21:25,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:21:25,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:21:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2020-12-23 09:21:25,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:21:25,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236874987] [2020-12-23 09:21:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:21:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-12-23 09:21:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:21:25,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236874987] [2020-12-23 09:21:25,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:21:25,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:21:25,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156485679] [2020-12-23 09:21:25,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:21:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:21:25,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:21:25,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:21:25,679 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-12-23 09:21:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:21:25,844 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-12-23 09:21:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:21:25,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 09:21:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:21:25,870 INFO L225 Difference]: With dead ends: 34 [2020-12-23 09:21:25,870 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 09:21:25,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:21:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 09:21:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-23 09:21:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 09:21:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-12-23 09:21:25,981 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2020-12-23 09:21:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:21:25,982 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-12-23 09:21:25,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:21:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2020-12-23 09:21:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 09:21:25,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:21:25,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:21:25,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:21:25,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:21:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:21:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2020-12-23 09:21:25,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:21:25,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132556563] [2020-12-23 09:21:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:21:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-12-23 09:21:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:21:26,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132556563] [2020-12-23 09:21:26,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:21:26,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:21:26,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224099792] [2020-12-23 09:21:26,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:21:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:21:26,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:21:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:21:26,125 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 7 states. [2020-12-23 09:21:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:21:26,275 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-12-23 09:21:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:21:26,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-12-23 09:21:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:21:26,278 INFO L225 Difference]: With dead ends: 32 [2020-12-23 09:21:26,278 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 09:21:26,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:21:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 09:21:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 09:21:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 09:21:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-23 09:21:26,294 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-12-23 09:21:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:21:26,295 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-23 09:21:26,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:21:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-23 09:21:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 09:21:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:21:26,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:21:26,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:21:26,299 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:21:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:21:26,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2020-12-23 09:21:26,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:21:26,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869742720] [2020-12-23 09:21:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:21:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-12-23 09:21:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-23 09:21:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:21:26,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869742720] [2020-12-23 09:21:26,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562910316] [2020-12-23 09:21:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:21:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:21:26,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 09:21:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:21:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 09:21:26,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:21:26,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-12-23 09:21:27,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021828558] [2020-12-23 09:21:27,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 09:21:27,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:21:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 09:21:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:21:27,015 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 15 states. [2020-12-23 09:21:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:21:27,244 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-23 09:21:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 09:21:27,245 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-12-23 09:21:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:21:27,245 INFO L225 Difference]: With dead ends: 23 [2020-12-23 09:21:27,246 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 09:21:27,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-12-23 09:21:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 09:21:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 09:21:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 09:21:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 09:21:27,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-23 09:21:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:21:27,248 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 09:21:27,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 09:21:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 09:21:27,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 09:21:27,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 09:21:27,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 09:21:27,547 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 09:21:27,548 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 09:21:27,548 INFO L189 CegarLoopUtils]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-12-23 09:21:27,548 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 09:21:27,549 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 09:21:27,549 INFO L192 CegarLoopUtils]: At program point L28(lines 28 47) the Hoare annotation is: true [2020-12-23 09:21:27,550 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2020-12-23 09:21:27,550 INFO L189 CegarLoopUtils]: For program point L45(line 45) no Hoare annotation was computed. [2020-12-23 09:21:27,550 INFO L189 CegarLoopUtils]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-12-23 09:21:27,550 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (or (= ULTIMATE.start_main_~n~0 0) (< 0 ULTIMATE.start_main_~n~0)) [2020-12-23 09:21:27,550 INFO L189 CegarLoopUtils]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-12-23 09:21:27,551 INFO L189 CegarLoopUtils]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-12-23 09:21:27,551 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_~n 0) (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2020-12-23 09:21:27,551 INFO L189 CegarLoopUtils]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-12-23 09:21:27,551 INFO L189 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-23 09:21:27,551 INFO L189 CegarLoopUtils]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2020-12-23 09:21:27,551 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= 1 addition_~n)) [2020-12-23 09:21:27,552 INFO L189 CegarLoopUtils]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-12-23 09:21:27,552 INFO L189 CegarLoopUtils]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-23 09:21:27,552 INFO L189 CegarLoopUtils]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-12-23 09:21:27,552 INFO L192 CegarLoopUtils]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2020-12-23 09:21:27,552 INFO L189 CegarLoopUtils]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2020-12-23 09:21:27,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 09:21:27 BoogieIcfgContainer [2020-12-23 09:21:27,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 09:21:27,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 09:21:27,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 09:21:27,565 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 09:21:27,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:21:24" (3/4) ... [2020-12-23 09:21:27,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 09:21:27,579 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2020-12-23 09:21:27,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 09:21:27,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-23 09:21:27,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 09:21:27,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 09:21:27,670 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive/Addition01-2.c-witness.graphml [2020-12-23 09:21:27,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 09:21:27,678 INFO L168 Benchmark]: Toolchain (without parser) took 3573.18 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.6 MB in the beginning and 121.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,680 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 09:21:27,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.70 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,685 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.8 MB in the end (delta: 739.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 09:21:27,685 INFO L168 Benchmark]: RCFGBuilder took 555.04 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 100.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,689 INFO L168 Benchmark]: TraceAbstraction took 2591.53 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 124.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,690 INFO L168 Benchmark]: Witness Printer took 105.43 ms. Allocated memory is still 181.4 MB. Free memory was 124.3 MB in the beginning and 121.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:21:27,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.70 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.8 MB in the end (delta: 739.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 555.04 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 100.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2591.53 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 124.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. * Witness Printer took 105.43 ms. Allocated memory is still 181.4 MB. Free memory was 124.3 MB in the beginning and 121.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 47 SDslu, 110 SDs, 0 SdLazy, 203 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5208 SizeOfPredicates, 7 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 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...