/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 04:40:00,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 04:40:00,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 04:40:00,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 04:40:00,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 04:40:00,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 04:40:00,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 04:40:00,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 04:40:00,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 04:40:00,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 04:40:00,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 04:40:00,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 04:40:00,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 04:40:00,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 04:40:00,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 04:40:00,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 04:40:00,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 04:40:00,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 04:40:00,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 04:40:00,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 04:40:00,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 04:40:00,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 04:40:00,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 04:40:00,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 04:40:00,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 04:40:00,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 04:40:00,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 04:40:00,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 04:40:00,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 04:40:00,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 04:40:00,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 04:40:00,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 04:40:00,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 04:40:00,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 04:40:00,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 04:40:00,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 04:40:00,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 04:40:00,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 04:40:00,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 04:40:00,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 04:40:00,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 04:40:00,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 04:40:00,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 04:40:00,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 04:40:00,753 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 04:40:00,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 04:40:00,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 04:40:00,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 04:40:00,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 04:40:00,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 04:40:00,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 04:40:00,754 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 04:40:01,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 04:40:01,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 04:40:01,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 04:40:01,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 04:40:01,050 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 04:40:01,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-18 04:40:01,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749182443/904cae1d78ac465abbeeb527e17b0840/FLAGf97f3a9f5 [2020-07-18 04:40:01,542 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 04:40:01,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-18 04:40:01,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749182443/904cae1d78ac465abbeeb527e17b0840/FLAGf97f3a9f5 [2020-07-18 04:40:01,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749182443/904cae1d78ac465abbeeb527e17b0840 [2020-07-18 04:40:01,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 04:40:01,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 04:40:01,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 04:40:01,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 04:40:01,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 04:40:01,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 04:40:01" (1/1) ... [2020-07-18 04:40:01,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d74c3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:01, skipping insertion in model container [2020-07-18 04:40:01,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 04:40:01" (1/1) ... [2020-07-18 04:40:01,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 04:40:01,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 04:40:02,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 04:40:02,128 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 04:40:02,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 04:40:02,162 INFO L208 MainTranslator]: Completed translation [2020-07-18 04:40:02,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02 WrapperNode [2020-07-18 04:40:02,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 04:40:02,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 04:40:02,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 04:40:02,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 04:40:02,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (1/1) ... [2020-07-18 04:40:02,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 04:40:02,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 04:40:02,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 04:40:02,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 04:40:02,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (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 [2020-07-18 04:40:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 04:40:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 04:40:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-18 04:40:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 04:40:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 04:40:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 04:40:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-18 04:40:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 04:40:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 04:40:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 04:40:02,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 04:40:02,722 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 04:40:02,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 04:40:02 BoogieIcfgContainer [2020-07-18 04:40:02,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 04:40:02,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 04:40:02,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 04:40:02,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 04:40:02,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 04:40:01" (1/3) ... [2020-07-18 04:40:02,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7689b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 04:40:02, skipping insertion in model container [2020-07-18 04:40:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 04:40:02" (2/3) ... [2020-07-18 04:40:02,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7689b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 04:40:02, skipping insertion in model container [2020-07-18 04:40:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 04:40:02" (3/3) ... [2020-07-18 04:40:02,739 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-07-18 04:40:02,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 04:40:02,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 04:40:02,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 04:40:02,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 04:40:02,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 04:40:02,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 04:40:02,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 04:40:02,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 04:40:02,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 04:40:02,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 04:40:02,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 04:40:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-18 04:40:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 04:40:02,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 04:40:02,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 04:40:02,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 04:40:02,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 04:40:02,842 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-07-18 04:40:02,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 04:40:02,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39169126] [2020-07-18 04:40:02,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 04:40:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:03,144 INFO L280 TraceCheckUtils]: 0: Hoare triple {45#true} assume true; {45#true} is VALID [2020-07-18 04:40:03,145 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {45#true} {45#true} #58#return; {45#true} is VALID [2020-07-18 04:40:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:03,264 INFO L280 TraceCheckUtils]: 0: Hoare triple {45#true} ~m := #in~m; {57#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:03,265 INFO L280 TraceCheckUtils]: 1: Hoare triple {57#(= |addition_#in~m| addition_~m)} ~n := #in~n; {58#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:03,267 INFO L280 TraceCheckUtils]: 2: Hoare triple {58#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {59#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:03,268 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:03,270 INFO L280 TraceCheckUtils]: 4: Hoare triple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:03,273 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {45#true} #62#return; {55#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:03,274 INFO L263 TraceCheckUtils]: 0: Hoare triple {45#true} call ULTIMATE.init(); {45#true} is VALID [2020-07-18 04:40:03,275 INFO L280 TraceCheckUtils]: 1: Hoare triple {45#true} assume true; {45#true} is VALID [2020-07-18 04:40:03,275 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {45#true} {45#true} #58#return; {45#true} is VALID [2020-07-18 04:40:03,276 INFO L263 TraceCheckUtils]: 3: Hoare triple {45#true} call #t~ret5 := main(); {45#true} is VALID [2020-07-18 04:40:03,276 INFO L280 TraceCheckUtils]: 4: Hoare triple {45#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {45#true} is VALID [2020-07-18 04:40:03,277 INFO L280 TraceCheckUtils]: 5: Hoare triple {45#true} ~m~0 := #t~nondet2; {45#true} is VALID [2020-07-18 04:40:03,278 INFO L280 TraceCheckUtils]: 6: Hoare triple {45#true} havoc #t~nondet2; {45#true} is VALID [2020-07-18 04:40:03,279 INFO L280 TraceCheckUtils]: 7: Hoare triple {45#true} assume !(~m~0 < 0 || ~m~0 > 1073741823); {45#true} is VALID [2020-07-18 04:40:03,279 INFO L280 TraceCheckUtils]: 8: Hoare triple {45#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {45#true} is VALID [2020-07-18 04:40:03,283 INFO L280 TraceCheckUtils]: 9: Hoare triple {45#true} ~n~0 := #t~nondet3; {45#true} is VALID [2020-07-18 04:40:03,283 INFO L280 TraceCheckUtils]: 10: Hoare triple {45#true} havoc #t~nondet3; {45#true} is VALID [2020-07-18 04:40:03,284 INFO L280 TraceCheckUtils]: 11: Hoare triple {45#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {45#true} is VALID [2020-07-18 04:40:03,284 INFO L263 TraceCheckUtils]: 12: Hoare triple {45#true} call #t~ret4 := addition(~m~0, ~n~0); {45#true} is VALID [2020-07-18 04:40:03,286 INFO L280 TraceCheckUtils]: 13: Hoare triple {45#true} ~m := #in~m; {57#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:03,295 INFO L280 TraceCheckUtils]: 14: Hoare triple {57#(= |addition_#in~m| addition_~m)} ~n := #in~n; {58#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:03,296 INFO L280 TraceCheckUtils]: 15: Hoare triple {58#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {59#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:03,298 INFO L280 TraceCheckUtils]: 16: Hoare triple {59#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:03,300 INFO L280 TraceCheckUtils]: 17: Hoare triple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:03,303 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {45#true} #62#return; {55#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:03,305 INFO L280 TraceCheckUtils]: 19: Hoare triple {55#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {55#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:03,306 INFO L280 TraceCheckUtils]: 20: Hoare triple {55#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} ~result~0 := #t~ret4; {56#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:03,308 INFO L280 TraceCheckUtils]: 21: Hoare triple {56#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} havoc #t~ret4; {56#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:03,309 INFO L280 TraceCheckUtils]: 22: Hoare triple {56#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} assume !(~result~0 == ~m~0 + ~n~0); {46#false} is VALID [2020-07-18 04:40:03,310 INFO L280 TraceCheckUtils]: 23: Hoare triple {46#false} assume !false; {46#false} is VALID [2020-07-18 04:40:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 04:40:03,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39169126] [2020-07-18 04:40:03,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 04:40:03,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 04:40:03,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65136386] [2020-07-18 04:40:03,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-18 04:40:03,339 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 04:40:03,345 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-18 04:40:03,415 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:03,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-18 04:40:03,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 04:40:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-18 04:40:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-18 04:40:03,429 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-07-18 04:40:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:04,215 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-07-18 04:40:04,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-18 04:40:04,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-18 04:40:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 04:40:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 04:40:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-18 04:40:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 04:40:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-18 04:40:04,239 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 65 transitions. [2020-07-18 04:40:04,354 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:04,382 INFO L225 Difference]: With dead ends: 56 [2020-07-18 04:40:04,382 INFO L226 Difference]: Without dead ends: 37 [2020-07-18 04:40:04,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-18 04:40:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-18 04:40:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-18 04:40:04,486 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 04:40:04,487 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 37 states. [2020-07-18 04:40:04,487 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-18 04:40:04,488 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-18 04:40:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:04,495 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-18 04:40:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-18 04:40:04,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:04,497 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:04,497 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-18 04:40:04,497 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-18 04:40:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:04,503 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-18 04:40:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-18 04:40:04,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:04,505 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:04,505 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 04:40:04,505 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 04:40:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-18 04:40:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-07-18 04:40:04,512 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-07-18 04:40:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 04:40:04,513 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-07-18 04:40:04,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-18 04:40:04,513 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states and 42 transitions. [2020-07-18 04:40:04,572 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-18 04:40:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-18 04:40:04,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 04:40:04,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 04:40:04,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 04:40:04,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 04:40:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 04:40:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-07-18 04:40:04,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 04:40:04,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070600165] [2020-07-18 04:40:04,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 04:40:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:04,649 INFO L280 TraceCheckUtils]: 0: Hoare triple {329#true} assume true; {329#true} is VALID [2020-07-18 04:40:04,649 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {329#true} {329#true} #58#return; {329#true} is VALID [2020-07-18 04:40:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:04,724 INFO L280 TraceCheckUtils]: 0: Hoare triple {329#true} ~m := #in~m; {329#true} is VALID [2020-07-18 04:40:04,725 INFO L280 TraceCheckUtils]: 1: Hoare triple {329#true} ~n := #in~n; {341#(= |addition_#in~n| addition_~n)} is VALID [2020-07-18 04:40:04,726 INFO L280 TraceCheckUtils]: 2: Hoare triple {341#(= |addition_#in~n| addition_~n)} assume !(0 == ~n); {342#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,727 INFO L280 TraceCheckUtils]: 3: Hoare triple {342#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} assume !(~n > 0); {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,728 INFO L280 TraceCheckUtils]: 4: Hoare triple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume !(~n < 0); {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,729 INFO L280 TraceCheckUtils]: 5: Hoare triple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume true; {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,731 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} {333#(<= 0 main_~n~0)} #62#return; {330#false} is VALID [2020-07-18 04:40:04,732 INFO L263 TraceCheckUtils]: 0: Hoare triple {329#true} call ULTIMATE.init(); {329#true} is VALID [2020-07-18 04:40:04,732 INFO L280 TraceCheckUtils]: 1: Hoare triple {329#true} assume true; {329#true} is VALID [2020-07-18 04:40:04,733 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {329#true} {329#true} #58#return; {329#true} is VALID [2020-07-18 04:40:04,733 INFO L263 TraceCheckUtils]: 3: Hoare triple {329#true} call #t~ret5 := main(); {329#true} is VALID [2020-07-18 04:40:04,734 INFO L280 TraceCheckUtils]: 4: Hoare triple {329#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {329#true} is VALID [2020-07-18 04:40:04,734 INFO L280 TraceCheckUtils]: 5: Hoare triple {329#true} ~m~0 := #t~nondet2; {329#true} is VALID [2020-07-18 04:40:04,734 INFO L280 TraceCheckUtils]: 6: Hoare triple {329#true} havoc #t~nondet2; {329#true} is VALID [2020-07-18 04:40:04,735 INFO L280 TraceCheckUtils]: 7: Hoare triple {329#true} assume !(~m~0 < 0 || ~m~0 > 1073741823); {329#true} is VALID [2020-07-18 04:40:04,735 INFO L280 TraceCheckUtils]: 8: Hoare triple {329#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {329#true} is VALID [2020-07-18 04:40:04,735 INFO L280 TraceCheckUtils]: 9: Hoare triple {329#true} ~n~0 := #t~nondet3; {329#true} is VALID [2020-07-18 04:40:04,736 INFO L280 TraceCheckUtils]: 10: Hoare triple {329#true} havoc #t~nondet3; {329#true} is VALID [2020-07-18 04:40:04,737 INFO L280 TraceCheckUtils]: 11: Hoare triple {329#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {333#(<= 0 main_~n~0)} is VALID [2020-07-18 04:40:04,737 INFO L263 TraceCheckUtils]: 12: Hoare triple {333#(<= 0 main_~n~0)} call #t~ret4 := addition(~m~0, ~n~0); {329#true} is VALID [2020-07-18 04:40:04,738 INFO L280 TraceCheckUtils]: 13: Hoare triple {329#true} ~m := #in~m; {329#true} is VALID [2020-07-18 04:40:04,738 INFO L280 TraceCheckUtils]: 14: Hoare triple {329#true} ~n := #in~n; {341#(= |addition_#in~n| addition_~n)} is VALID [2020-07-18 04:40:04,740 INFO L280 TraceCheckUtils]: 15: Hoare triple {341#(= |addition_#in~n| addition_~n)} assume !(0 == ~n); {342#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,741 INFO L280 TraceCheckUtils]: 16: Hoare triple {342#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} assume !(~n > 0); {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,742 INFO L280 TraceCheckUtils]: 17: Hoare triple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume !(~n < 0); {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,743 INFO L280 TraceCheckUtils]: 18: Hoare triple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume true; {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-18 04:40:04,744 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {343#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} {333#(<= 0 main_~n~0)} #62#return; {330#false} is VALID [2020-07-18 04:40:04,745 INFO L280 TraceCheckUtils]: 20: Hoare triple {330#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {330#false} is VALID [2020-07-18 04:40:04,745 INFO L280 TraceCheckUtils]: 21: Hoare triple {330#false} ~result~0 := #t~ret4; {330#false} is VALID [2020-07-18 04:40:04,746 INFO L280 TraceCheckUtils]: 22: Hoare triple {330#false} havoc #t~ret4; {330#false} is VALID [2020-07-18 04:40:04,746 INFO L280 TraceCheckUtils]: 23: Hoare triple {330#false} assume !(~result~0 == ~m~0 + ~n~0); {330#false} is VALID [2020-07-18 04:40:04,746 INFO L280 TraceCheckUtils]: 24: Hoare triple {330#false} assume !false; {330#false} is VALID [2020-07-18 04:40:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 04:40:04,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070600165] [2020-07-18 04:40:04,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 04:40:04,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 04:40:04,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693067212] [2020-07-18 04:40:04,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-07-18 04:40:04,752 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 04:40:04,752 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 04:40:04,783 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:04,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 04:40:04,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 04:40:04,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 04:40:04,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-18 04:40:04,784 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-07-18 04:40:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:05,156 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-07-18 04:40:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 04:40:05,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-07-18 04:40:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 04:40:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 04:40:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-07-18 04:40:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 04:40:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-07-18 04:40:05,167 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 64 transitions. [2020-07-18 04:40:05,257 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:05,259 INFO L225 Difference]: With dead ends: 56 [2020-07-18 04:40:05,259 INFO L226 Difference]: Without dead ends: 32 [2020-07-18 04:40:05,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-18 04:40:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-18 04:40:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-18 04:40:05,309 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 04:40:05,309 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 32 states. [2020-07-18 04:40:05,309 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2020-07-18 04:40:05,309 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2020-07-18 04:40:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:05,313 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-18 04:40:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-18 04:40:05,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:05,314 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:05,314 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2020-07-18 04:40:05,314 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2020-07-18 04:40:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:05,318 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-18 04:40:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-18 04:40:05,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:05,319 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:05,319 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 04:40:05,319 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 04:40:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-18 04:40:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-18 04:40:05,322 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-07-18 04:40:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 04:40:05,323 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-18 04:40:05,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 04:40:05,323 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 33 transitions. [2020-07-18 04:40:05,361 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-18 04:40:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-18 04:40:05,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 04:40:05,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 04:40:05,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 04:40:05,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 04:40:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 04:40:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-07-18 04:40:05,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 04:40:05,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940124012] [2020-07-18 04:40:05,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 04:40:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:05,486 INFO L280 TraceCheckUtils]: 0: Hoare triple {588#true} assume true; {588#true} is VALID [2020-07-18 04:40:05,487 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {588#true} {588#true} #58#return; {588#true} is VALID [2020-07-18 04:40:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 04:40:05,640 INFO L280 TraceCheckUtils]: 0: Hoare triple {588#true} ~m := #in~m; {610#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:05,641 INFO L280 TraceCheckUtils]: 1: Hoare triple {610#(= |addition_#in~m| addition_~m)} ~n := #in~n; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,642 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,643 INFO L280 TraceCheckUtils]: 3: Hoare triple {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,644 INFO L280 TraceCheckUtils]: 4: Hoare triple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,646 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} #64#return; {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} is VALID [2020-07-18 04:40:05,647 INFO L280 TraceCheckUtils]: 0: Hoare triple {588#true} ~m := #in~m; {610#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:05,648 INFO L280 TraceCheckUtils]: 1: Hoare triple {610#(= |addition_#in~m| addition_~m)} ~n := #in~n; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,649 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume !(0 == ~n); {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,649 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume ~n > 0; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,650 INFO L263 TraceCheckUtils]: 4: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} call #t~ret0 := addition(1 + ~m, ~n - 1); {588#true} is VALID [2020-07-18 04:40:05,650 INFO L280 TraceCheckUtils]: 5: Hoare triple {588#true} ~m := #in~m; {610#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:05,656 INFO L280 TraceCheckUtils]: 6: Hoare triple {610#(= |addition_#in~m| addition_~m)} ~n := #in~n; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,658 INFO L280 TraceCheckUtils]: 7: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,659 INFO L280 TraceCheckUtils]: 8: Hoare triple {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,659 INFO L280 TraceCheckUtils]: 9: Hoare triple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,666 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} #64#return; {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} is VALID [2020-07-18 04:40:05,667 INFO L280 TraceCheckUtils]: 11: Hoare triple {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647; {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} is VALID [2020-07-18 04:40:05,669 INFO L280 TraceCheckUtils]: 12: Hoare triple {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} #res := #t~ret0; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,669 INFO L280 TraceCheckUtils]: 13: Hoare triple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} havoc #t~ret0; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,670 INFO L280 TraceCheckUtils]: 14: Hoare triple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} assume true; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,671 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} {588#true} #62#return; {608#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:05,673 INFO L263 TraceCheckUtils]: 0: Hoare triple {588#true} call ULTIMATE.init(); {588#true} is VALID [2020-07-18 04:40:05,673 INFO L280 TraceCheckUtils]: 1: Hoare triple {588#true} assume true; {588#true} is VALID [2020-07-18 04:40:05,673 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {588#true} {588#true} #58#return; {588#true} is VALID [2020-07-18 04:40:05,674 INFO L263 TraceCheckUtils]: 3: Hoare triple {588#true} call #t~ret5 := main(); {588#true} is VALID [2020-07-18 04:40:05,674 INFO L280 TraceCheckUtils]: 4: Hoare triple {588#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {588#true} is VALID [2020-07-18 04:40:05,674 INFO L280 TraceCheckUtils]: 5: Hoare triple {588#true} ~m~0 := #t~nondet2; {588#true} is VALID [2020-07-18 04:40:05,674 INFO L280 TraceCheckUtils]: 6: Hoare triple {588#true} havoc #t~nondet2; {588#true} is VALID [2020-07-18 04:40:05,675 INFO L280 TraceCheckUtils]: 7: Hoare triple {588#true} assume !(~m~0 < 0 || ~m~0 > 1073741823); {588#true} is VALID [2020-07-18 04:40:05,675 INFO L280 TraceCheckUtils]: 8: Hoare triple {588#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {588#true} is VALID [2020-07-18 04:40:05,675 INFO L280 TraceCheckUtils]: 9: Hoare triple {588#true} ~n~0 := #t~nondet3; {588#true} is VALID [2020-07-18 04:40:05,675 INFO L280 TraceCheckUtils]: 10: Hoare triple {588#true} havoc #t~nondet3; {588#true} is VALID [2020-07-18 04:40:05,676 INFO L280 TraceCheckUtils]: 11: Hoare triple {588#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {588#true} is VALID [2020-07-18 04:40:05,676 INFO L263 TraceCheckUtils]: 12: Hoare triple {588#true} call #t~ret4 := addition(~m~0, ~n~0); {588#true} is VALID [2020-07-18 04:40:05,677 INFO L280 TraceCheckUtils]: 13: Hoare triple {588#true} ~m := #in~m; {610#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:05,677 INFO L280 TraceCheckUtils]: 14: Hoare triple {610#(= |addition_#in~m| addition_~m)} ~n := #in~n; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,678 INFO L280 TraceCheckUtils]: 15: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume !(0 == ~n); {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,679 INFO L280 TraceCheckUtils]: 16: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume ~n > 0; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,679 INFO L263 TraceCheckUtils]: 17: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} call #t~ret0 := addition(1 + ~m, ~n - 1); {588#true} is VALID [2020-07-18 04:40:05,680 INFO L280 TraceCheckUtils]: 18: Hoare triple {588#true} ~m := #in~m; {610#(= |addition_#in~m| addition_~m)} is VALID [2020-07-18 04:40:05,681 INFO L280 TraceCheckUtils]: 19: Hoare triple {610#(= |addition_#in~m| addition_~m)} ~n := #in~n; {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,681 INFO L280 TraceCheckUtils]: 20: Hoare triple {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-18 04:40:05,682 INFO L280 TraceCheckUtils]: 21: Hoare triple {620#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,683 INFO L280 TraceCheckUtils]: 22: Hoare triple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-18 04:40:05,684 INFO L275 TraceCheckUtils]: 23: Hoare quadruple {621#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {611#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} #64#return; {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} is VALID [2020-07-18 04:40:05,685 INFO L280 TraceCheckUtils]: 24: Hoare triple {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} assume -2147483648 <= #t~ret0 && #t~ret0 <= 2147483647; {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} is VALID [2020-07-18 04:40:05,686 INFO L280 TraceCheckUtils]: 25: Hoare triple {618#(and (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#t~ret0|) (<= |addition_#t~ret0| (+ |addition_#in~n| |addition_#in~m|)))} #res := #t~ret0; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,687 INFO L280 TraceCheckUtils]: 26: Hoare triple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} havoc #t~ret0; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,688 INFO L280 TraceCheckUtils]: 27: Hoare triple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} assume true; {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} is VALID [2020-07-18 04:40:05,690 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {619#(and (<= |addition_#res| (+ |addition_#in~n| |addition_#in~m|)) (<= (+ |addition_#in~n| |addition_#in~m|) |addition_#res|))} {588#true} #62#return; {608#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:05,690 INFO L280 TraceCheckUtils]: 29: Hoare triple {608#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {608#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:05,692 INFO L280 TraceCheckUtils]: 30: Hoare triple {608#(and (<= (+ main_~m~0 main_~n~0) |main_#t~ret4|) (<= |main_#t~ret4| (+ main_~m~0 main_~n~0)))} ~result~0 := #t~ret4; {609#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:05,694 INFO L280 TraceCheckUtils]: 31: Hoare triple {609#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} havoc #t~ret4; {609#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} is VALID [2020-07-18 04:40:05,698 INFO L280 TraceCheckUtils]: 32: Hoare triple {609#(and (<= (+ main_~m~0 main_~n~0) main_~result~0) (<= main_~result~0 (+ main_~m~0 main_~n~0)))} assume !(~result~0 == ~m~0 + ~n~0); {589#false} is VALID [2020-07-18 04:40:05,698 INFO L280 TraceCheckUtils]: 33: Hoare triple {589#false} assume !false; {589#false} is VALID [2020-07-18 04:40:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-18 04:40:05,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940124012] [2020-07-18 04:40:05,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 04:40:05,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-18 04:40:05,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807731034] [2020-07-18 04:40:05,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-18 04:40:05,703 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 04:40:05,704 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-18 04:40:05,744 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:05,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-18 04:40:05,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 04:40:05,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-18 04:40:05,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-18 04:40:05,745 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 10 states. [2020-07-18 04:40:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:06,248 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-18 04:40:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-18 04:40:06,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-18 04:40:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 04:40:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 04:40:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 33 transitions. [2020-07-18 04:40:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 04:40:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 33 transitions. [2020-07-18 04:40:06,257 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 33 transitions. [2020-07-18 04:40:06,301 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:06,301 INFO L225 Difference]: With dead ends: 32 [2020-07-18 04:40:06,301 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 04:40:06,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-07-18 04:40:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 04:40:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 04:40:06,304 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 04:40:06,304 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 04:40:06,304 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 04:40:06,304 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 04:40:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:06,304 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 04:40:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 04:40:06,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:06,304 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:06,305 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 04:40:06,305 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 04:40:06,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 04:40:06,305 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 04:40:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 04:40:06,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:06,305 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 04:40:06,305 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 04:40:06,305 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 04:40:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 04:40:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 04:40:06,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-07-18 04:40:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 04:40:06,306 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 04:40:06,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-18 04:40:06,306 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 04:40:06,307 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 04:40:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 04:40:06,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 04:40:06,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 04:40:06,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 04:40:06,955 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 04:40:06,956 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-18 04:40:06,957 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-07-18 04:40:06,957 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-18 04:40:06,957 INFO L271 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-07-18 04:40:06,957 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-07-18 04:40:06,957 INFO L271 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-07-18 04:40:06,958 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 26 45) the Hoare annotation is: true [2020-07-18 04:40:06,958 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 26 45) the Hoare annotation is: true [2020-07-18 04:40:06,958 INFO L264 CegarLoopResult]: At program point L40(lines 40 44) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0))) [2020-07-18 04:40:06,958 INFO L271 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: true [2020-07-18 04:40:06,958 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) the Hoare annotation is: false [2020-07-18 04:40:06,958 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-07-18 04:40:06,958 INFO L271 CegarLoopResult]: At program point L28(lines 28 32) the Hoare annotation is: true [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: false [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0))) [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-18 04:40:06,959 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-18 04:40:06,959 INFO L264 CegarLoopResult]: At program point L39-3(line 39) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (<= main_~result~0 .cse0) (<= .cse0 |main_#t~ret4|) (<= |main_#t~ret4| .cse0))) [2020-07-18 04:40:06,960 INFO L264 CegarLoopResult]: At program point additionFINAL(lines 13 23) the Hoare annotation is: (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= |addition_#res| .cse1) .cse2 (<= .cse1 |addition_#res|))) (and .cse0 .cse2 (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))))) [2020-07-18 04:40:06,960 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,960 INFO L264 CegarLoopResult]: At program point L20(lines 20 22) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,960 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,961 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,961 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,961 INFO L264 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,961 INFO L264 CegarLoopResult]: At program point L17(lines 17 19) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,962 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) .cse2 (<= |addition_#t~ret0| .cse1))) (and .cse0 .cse2 (<= |addition_#in~n| 0)))) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,963 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) .cse2 (<= |addition_#t~ret0| .cse1))) (and .cse0 .cse2 (<= |addition_#in~n| 0)))) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,963 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m)) [2020-07-18 04:40:06,963 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (let ((.cse0 (= |addition_#in~n| addition_~n))) (or (and .cse0 (<= |addition_#in~n| 0)) (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= .cse1 |addition_#t~ret0|) (<= |addition_#res| .cse1) (<= .cse1 |addition_#res|) (<= |addition_#t~ret0| .cse1))))) (not (= 0 |addition_#in~n|))) [2020-07-18 04:40:06,963 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-07-18 04:40:06,963 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-07-18 04:40:06,964 INFO L264 CegarLoopResult]: At program point L13(lines 13 23) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2020-07-18 04:40:06,964 INFO L264 CegarLoopResult]: At program point additionEXIT(lines 13 23) the Hoare annotation is: (let ((.cse0 (= |addition_#in~n| addition_~n)) (.cse2 (= |addition_#in~m| addition_~m))) (or (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 (<= |addition_#res| .cse1) .cse2 (<= .cse1 |addition_#res|))) (and .cse0 .cse2 (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|))))) [2020-07-18 04:40:07,001 INFO L163 areAnnotationChecker]: CFG has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 04:40:07,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 04:40:07 BoogieIcfgContainer [2020-07-18 04:40:07,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 04:40:07,022 INFO L168 Benchmark]: Toolchain (without parser) took 5106.33 ms. Allocated memory was 136.8 MB in the beginning and 281.5 MB in the end (delta: 144.7 MB). Free memory was 101.5 MB in the beginning and 216.7 MB in the end (delta: -115.2 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,024 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.79 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,027 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 136.8 MB. Free memory was 91.3 MB in the beginning and 90.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,035 INFO L168 Benchmark]: RCFGBuilder took 532.65 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.0 MB in the beginning and 158.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,041 INFO L168 Benchmark]: TraceAbstraction took 4290.36 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 158.0 MB in the beginning and 216.7 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-07-18 04:40:07,048 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 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.79 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 91.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 136.8 MB. Free memory was 91.3 MB in the beginning and 90.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.65 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 90.0 MB in the beginning and 158.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4290.36 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 158.0 MB in the beginning and 216.7 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 26]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for addition Derived contract for procedure addition: (((\old(n) == n && \result <= \old(n) + \old(m)) && \old(m) == m) && \old(n) + \old(m) <= \result) || (((\old(n) == n && \old(m) == m) && \old(n) <= 0) && !(0 == \old(n))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 94 SDslu, 252 SDs, 0 SdLazy, 209 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 74 PreInvPairs, 133 NumberOfFragments, 371 HoareAnnotationTreeSize, 74 FomulaSimplifications, 149 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 125 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 8968 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...