/usr/bin/java -ea -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:00:25,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:00:25,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:00:25,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:00:25,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:00:25,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:00:25,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:00:25,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:00:25,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:00:25,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:00:25,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:00:25,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:00:25,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:00:25,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:00:25,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:00:25,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:00:25,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:00:25,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:00:25,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:00:25,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:00:25,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:00:25,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:00:25,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:00:25,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:00:25,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 12:00:25,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 12:00:25,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 12:00:25,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 12:00:25,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 12:00:25,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 12:00:25,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 12:00:25,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 12:00:25,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 12:00:25,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 12:00:25,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 12:00:25,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 12:00:25,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 12:00:25,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 12:00:25,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:00:25,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:00:25,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:00:25,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-08 12:00:25,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:00:25,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:00:25,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:00:25,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:00:25,187 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:00:25,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:00:25,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:00:25,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:00:25,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:00:25,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:00:25,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:00:25,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:00:25,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:00:25,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:00:25,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:00:25,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:00:25,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:00:25,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:00:25,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:00:25,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:00:25,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:00:25,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:00:25,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:00:25,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:00:25,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:00:25,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:00:25,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:00:25,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:00:25,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:00:25,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:00:25,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:00:25,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:00:25,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:00:25,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:00:25,554 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:00:25,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-07-08 12:00:25,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe4ea1d8/dc4c275598904fcab2072073ca131841/FLAG5d2f4d371 [2020-07-08 12:00:26,073 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:00:26,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition02.c [2020-07-08 12:00:26,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe4ea1d8/dc4c275598904fcab2072073ca131841/FLAG5d2f4d371 [2020-07-08 12:00:26,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe4ea1d8/dc4c275598904fcab2072073ca131841 [2020-07-08 12:00:26,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:00:26,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:00:26,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:00:26,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:00:26,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:00:26,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49257e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26, skipping insertion in model container [2020-07-08 12:00:26,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:00:26,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:00:26,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:00:26,696 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:00:26,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:00:26,731 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:00:26,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26 WrapperNode [2020-07-08 12:00:26,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:00:26,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:00:26,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:00:26,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:00:26,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... [2020-07-08 12:00:26,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:00:26,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:00:26,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:00:26,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:00:26,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:00:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:00:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:00:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-08 12:00:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:00:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:00:27,209 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:00:27,210 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 12:00:27,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:00:27 BoogieIcfgContainer [2020-07-08 12:00:27,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:00:27,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:00:27,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:00:27,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:00:27,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:00:26" (1/3) ... [2020-07-08 12:00:27,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1455bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:00:27, skipping insertion in model container [2020-07-08 12:00:27,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:00:26" (2/3) ... [2020-07-08 12:00:27,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1455bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:00:27, skipping insertion in model container [2020-07-08 12:00:27,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:00:27" (3/3) ... [2020-07-08 12:00:27,224 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-07-08 12:00:27,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:00:27,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:00:27,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:00:27,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:00:27,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:00:27,286 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:00:27,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:00:27,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:00:27,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:00:27,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:00:27,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:00:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-08 12:00:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-08 12:00:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:00:27,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:00:27,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:00:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:00:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-07-08 12:00:27,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:00:27,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184598672] [2020-07-08 12:00:27,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:00:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:27,679 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-08 12:00:27,680 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #42#return; {29#true} is VALID [2020-07-08 12:00:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:27,759 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} ~m := #in~m;~n := #in~n; {40#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 12:00:27,761 INFO L280 TraceCheckUtils]: 1: Hoare triple {40#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n;#res := ~m; {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 12:00:27,762 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 12:00:27,765 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {33#(<= 0 main_~n~0)} #46#return; {38#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} is VALID [2020-07-08 12:00:27,766 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-08 12:00:27,766 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-08 12:00:27,767 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #42#return; {29#true} is VALID [2020-07-08 12:00:27,767 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret5 := main(); {29#true} is VALID [2020-07-08 12:00:27,768 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~m~0 := #t~nondet2;havoc #t~nondet2; {29#true} is VALID [2020-07-08 12:00:27,768 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} assume !(~m~0 < 0 || ~m~0 > 1073741823);assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;~n~0 := #t~nondet3;havoc #t~nondet3; {29#true} is VALID [2020-07-08 12:00:27,770 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {33#(<= 0 main_~n~0)} is VALID [2020-07-08 12:00:27,770 INFO L263 TraceCheckUtils]: 7: Hoare triple {33#(<= 0 main_~n~0)} call #t~ret4 := addition(~m~0, ~n~0); {29#true} is VALID [2020-07-08 12:00:27,771 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} ~m := #in~m;~n := #in~n; {40#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 12:00:27,773 INFO L280 TraceCheckUtils]: 9: Hoare triple {40#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n;#res := ~m; {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 12:00:27,774 INFO L280 TraceCheckUtils]: 10: Hoare triple {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 12:00:27,778 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {41#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {33#(<= 0 main_~n~0)} #46#return; {38#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} is VALID [2020-07-08 12:00:27,779 INFO L280 TraceCheckUtils]: 12: Hoare triple {38#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647;~result~0 := #t~ret4;havoc #t~ret4; {39#(and (<= (+ main_~n~0 main_~result~0) main_~m~0) (<= main_~m~0 (+ main_~n~0 main_~result~0)))} is VALID [2020-07-08 12:00:27,781 INFO L280 TraceCheckUtils]: 13: Hoare triple {39#(and (<= (+ main_~n~0 main_~result~0) main_~m~0) (<= main_~m~0 (+ main_~n~0 main_~result~0)))} assume !(~result~0 == ~m~0 - ~n~0); {30#false} is VALID [2020-07-08 12:00:27,781 INFO L280 TraceCheckUtils]: 14: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-08 12:00:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:00:27,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184598672] [2020-07-08 12:00:27,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:00:27,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-08 12:00:27,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132554658] [2020-07-08 12:00:27,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-08 12:00:27,798 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:00:27,802 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-08 12:00:27,837 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:00:27,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-08 12:00:27,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:00:27,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-08 12:00:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-08 12:00:27,851 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-07-08 12:00:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,441 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-07-08 12:00:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 12:00:28,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-08 12:00:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:00:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:00:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 47 transitions. [2020-07-08 12:00:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:00:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 47 transitions. [2020-07-08 12:00:28,459 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 47 transitions. [2020-07-08 12:00:28,533 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:00:28,547 INFO L225 Difference]: With dead ends: 38 [2020-07-08 12:00:28,547 INFO L226 Difference]: Without dead ends: 24 [2020-07-08 12:00:28,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-08 12:00:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-08 12:00:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-08 12:00:28,599 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:00:28,600 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 24 states. [2020-07-08 12:00:28,600 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-08 12:00:28,601 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-08 12:00:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,607 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-07-08 12:00:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-08 12:00:28,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:00:28,608 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:00:28,609 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-08 12:00:28,609 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-08 12:00:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,614 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-07-08 12:00:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-08 12:00:28,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:00:28,616 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:00:28,616 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:00:28,616 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:00:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-08 12:00:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-08 12:00:28,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-08 12:00:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:00:28,623 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-08 12:00:28,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-08 12:00:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-08 12:00:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-08 12:00:28,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:00:28,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:00:28,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:00:28,625 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:00:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:00:28,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-07-08 12:00:28,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:00:28,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507234131] [2020-07-08 12:00:28,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:00:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:28,688 INFO L280 TraceCheckUtils]: 0: Hoare triple {176#true} assume true; {176#true} is VALID [2020-07-08 12:00:28,689 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {176#true} {176#true} #42#return; {176#true} is VALID [2020-07-08 12:00:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:00:28,725 INFO L280 TraceCheckUtils]: 0: Hoare triple {176#true} ~m := #in~m;~n := #in~n; {176#true} is VALID [2020-07-08 12:00:28,727 INFO L280 TraceCheckUtils]: 1: Hoare triple {176#true} assume !(0 == ~n); {186#(not (= 0 addition_~n))} is VALID [2020-07-08 12:00:28,728 INFO L280 TraceCheckUtils]: 2: Hoare triple {186#(not (= 0 addition_~n))} assume !(~n > 0); {187#(and (<= addition_~n 0) (not (= 0 addition_~n)))} is VALID [2020-07-08 12:00:28,729 INFO L280 TraceCheckUtils]: 3: Hoare triple {187#(and (<= addition_~n 0) (not (= 0 addition_~n)))} assume !(~n < 0); {177#false} is VALID [2020-07-08 12:00:28,729 INFO L280 TraceCheckUtils]: 4: Hoare triple {177#false} assume true; {177#false} is VALID [2020-07-08 12:00:28,730 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {177#false} {176#true} #46#return; {177#false} is VALID [2020-07-08 12:00:28,730 INFO L263 TraceCheckUtils]: 0: Hoare triple {176#true} call ULTIMATE.init(); {176#true} is VALID [2020-07-08 12:00:28,731 INFO L280 TraceCheckUtils]: 1: Hoare triple {176#true} assume true; {176#true} is VALID [2020-07-08 12:00:28,731 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {176#true} {176#true} #42#return; {176#true} is VALID [2020-07-08 12:00:28,731 INFO L263 TraceCheckUtils]: 3: Hoare triple {176#true} call #t~ret5 := main(); {176#true} is VALID [2020-07-08 12:00:28,732 INFO L280 TraceCheckUtils]: 4: Hoare triple {176#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~m~0 := #t~nondet2;havoc #t~nondet2; {176#true} is VALID [2020-07-08 12:00:28,732 INFO L280 TraceCheckUtils]: 5: Hoare triple {176#true} assume !(~m~0 < 0 || ~m~0 > 1073741823);assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;~n~0 := #t~nondet3;havoc #t~nondet3; {176#true} is VALID [2020-07-08 12:00:28,732 INFO L280 TraceCheckUtils]: 6: Hoare triple {176#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {176#true} is VALID [2020-07-08 12:00:28,733 INFO L263 TraceCheckUtils]: 7: Hoare triple {176#true} call #t~ret4 := addition(~m~0, ~n~0); {176#true} is VALID [2020-07-08 12:00:28,733 INFO L280 TraceCheckUtils]: 8: Hoare triple {176#true} ~m := #in~m;~n := #in~n; {176#true} is VALID [2020-07-08 12:00:28,734 INFO L280 TraceCheckUtils]: 9: Hoare triple {176#true} assume !(0 == ~n); {186#(not (= 0 addition_~n))} is VALID [2020-07-08 12:00:28,735 INFO L280 TraceCheckUtils]: 10: Hoare triple {186#(not (= 0 addition_~n))} assume !(~n > 0); {187#(and (<= addition_~n 0) (not (= 0 addition_~n)))} is VALID [2020-07-08 12:00:28,736 INFO L280 TraceCheckUtils]: 11: Hoare triple {187#(and (<= addition_~n 0) (not (= 0 addition_~n)))} assume !(~n < 0); {177#false} is VALID [2020-07-08 12:00:28,736 INFO L280 TraceCheckUtils]: 12: Hoare triple {177#false} assume true; {177#false} is VALID [2020-07-08 12:00:28,737 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {177#false} {176#true} #46#return; {177#false} is VALID [2020-07-08 12:00:28,737 INFO L280 TraceCheckUtils]: 14: Hoare triple {177#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647;~result~0 := #t~ret4;havoc #t~ret4; {177#false} is VALID [2020-07-08 12:00:28,737 INFO L280 TraceCheckUtils]: 15: Hoare triple {177#false} assume !(~result~0 == ~m~0 - ~n~0); {177#false} is VALID [2020-07-08 12:00:28,738 INFO L280 TraceCheckUtils]: 16: Hoare triple {177#false} assume !false; {177#false} is VALID [2020-07-08 12:00:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:00:28,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507234131] [2020-07-08 12:00:28,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:00:28,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-08 12:00:28,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275796632] [2020-07-08 12:00:28,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-08 12:00:28,742 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:00:28,742 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-08 12:00:28,762 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:00:28,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-08 12:00:28,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:00:28,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-08 12:00:28,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:00:28,763 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-07-08 12:00:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,858 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-07-08 12:00:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-08 12:00:28,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-08 12:00:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:00:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:00:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2020-07-08 12:00:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:00:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2020-07-08 12:00:28,867 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 42 transitions. [2020-07-08 12:00:28,938 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:00:28,941 INFO L225 Difference]: With dead ends: 34 [2020-07-08 12:00:28,941 INFO L226 Difference]: Without dead ends: 26 [2020-07-08 12:00:28,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:00:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-08 12:00:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-08 12:00:28,964 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:00:28,965 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 24 states. [2020-07-08 12:00:28,965 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 24 states. [2020-07-08 12:00:28,965 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 24 states. [2020-07-08 12:00:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,977 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-07-08 12:00:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-07-08 12:00:28,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:00:28,979 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:00:28,979 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 26 states. [2020-07-08 12:00:28,979 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 26 states. [2020-07-08 12:00:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:00:28,991 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-07-08 12:00:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-07-08 12:00:28,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:00:28,995 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:00:28,996 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:00:28,996 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:00:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-08 12:00:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-08 12:00:29,002 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2020-07-08 12:00:29,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:00:29,003 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-08 12:00:29,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-08 12:00:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-08 12:00:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-08 12:00:29,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:00:29,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:00:29,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 12:00:29,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:00:29,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:00:29,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-07-08 12:00:29,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:00:29,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666917532] [2020-07-08 12:00:29,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:00:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:00:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:00:29,117 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 12:00:29,118 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 12:00:29,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 12:00:29,153 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: additionENTRY has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:00:29,154 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:00:29,155 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:00:29,155 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-08 12:00:29,155 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-08 12:00:29,155 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-08 12:00:29,156 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-08 12:00:29,156 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:00:29,156 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:00:29,156 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-08 12:00:29,157 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-08 12:00:29,157 WARN L170 areAnnotationChecker]: additionFINAL has no Hoare annotation [2020-07-08 12:00:29,157 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:00:29,157 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 12:00:29,157 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:00:29,158 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-08 12:00:29,158 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 12:00:29,159 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 12:00:29,160 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 12:00:29,164 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-08 12:00:29,165 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-08 12:00:29,165 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 12:00:29,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:00:29 BoogieIcfgContainer [2020-07-08 12:00:29,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:00:29,184 INFO L168 Benchmark]: Toolchain (without parser) took 2688.49 ms. Allocated memory was 136.3 MB in the beginning and 229.1 MB in the end (delta: 92.8 MB). Free memory was 101.7 MB in the beginning and 109.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,186 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,189 INFO L168 Benchmark]: Boogie Preprocessor took 115.32 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,190 INFO L168 Benchmark]: RCFGBuilder took 365.48 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 159.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,193 INFO L168 Benchmark]: TraceAbstraction took 1962.23 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 158.6 MB in the beginning and 109.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-07-08 12:00:29,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.32 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.48 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 159.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1962.23 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 158.6 MB in the beginning and 109.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); [L28] COND FALSE !(m < 0 || m > 1073741823) [L33] int n = __VERIFIER_nondet_int(); [L34] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L39] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L14] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L17] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L18] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L14] COND TRUE n == 0 [L15] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L18] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L18] return addition(m+1, n-1); [L39] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L39] int result = addition(m,n); [L40] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L43] __VERIFIER_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 95 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...