/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 16:09:01,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 16:09:01,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 16:09:01,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 16:09:01,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 16:09:01,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 16:09:01,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 16:09:01,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 16:09:01,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 16:09:01,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 16:09:01,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 16:09:01,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 16:09:01,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 16:09:01,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 16:09:01,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 16:09:01,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 16:09:01,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 16:09:01,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 16:09:01,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 16:09:01,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 16:09:01,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 16:09:01,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 16:09:01,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 16:09:01,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 16:09:01,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 16:09:01,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 16:09:01,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 16:09:01,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 16:09:01,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 16:09:01,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 16:09:01,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 16:09:01,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 16:09:01,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 16:09:01,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 16:09:01,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 16:09:01,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 16:09:01,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 16:09:01,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 16:09:01,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 16:09:01,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 16:09:01,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 16:09:01,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 16:09:01,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 16:09:01,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 16:09:01,819 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 16:09:01,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 16:09:01,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 16:09:01,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 16:09:01,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 16:09:01,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 16:09:01,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 16:09:01,821 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 16:09:02,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 16:09:02,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 16:09:02,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 16:09:02,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 16:09:02,167 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 16:09:02,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-07-08 16:09:02,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a61ff33/28b3b99ddda44febbf405b5747592007/FLAG1afbb3c2c [2020-07-08 16:09:02,735 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 16:09:02,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-07-08 16:09:02,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a61ff33/28b3b99ddda44febbf405b5747592007/FLAG1afbb3c2c [2020-07-08 16:09:03,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a61ff33/28b3b99ddda44febbf405b5747592007 [2020-07-08 16:09:03,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 16:09:03,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 16:09:03,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 16:09:03,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 16:09:03,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 16:09:03,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba561d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03, skipping insertion in model container [2020-07-08 16:09:03,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 16:09:03,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 16:09:03,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:09:03,382 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 16:09:03,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:09:03,412 INFO L208 MainTranslator]: Completed translation [2020-07-08 16:09:03,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03 WrapperNode [2020-07-08 16:09:03,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 16:09:03,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 16:09:03,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 16:09:03,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 16:09:03,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (1/1) ... [2020-07-08 16:09:03,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 16:09:03,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 16:09:03,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 16:09:03,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 16:09:03,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (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 16:09:03,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 16:09:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 16:09:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-08 16:09:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 16:09:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 16:09:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-08 16:09:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 16:09:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 16:09:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 16:09:03,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 16:09:03,852 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 16:09:03,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:09:03 BoogieIcfgContainer [2020-07-08 16:09:03,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 16:09:03,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 16:09:03,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 16:09:03,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 16:09:03,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 04:09:03" (1/3) ... [2020-07-08 16:09:03,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a17dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:09:03, skipping insertion in model container [2020-07-08 16:09:03,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:09:03" (2/3) ... [2020-07-08 16:09:03,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a17dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:09:03, skipping insertion in model container [2020-07-08 16:09:03,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:09:03" (3/3) ... [2020-07-08 16:09:03,871 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2020-07-08 16:09:03,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 16:09:03,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 16:09:03,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 16:09:03,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 16:09:03,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 16:09:03,964 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 16:09:03,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 16:09:03,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 16:09:03,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 16:09:03,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 16:09:03,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 16:09:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-08 16:09:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-08 16:09:03,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:09:03,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:09:03,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:09:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:09:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-07-08 16:09:04,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:09:04,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459209550] [2020-07-08 16:09:04,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:09:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:04,243 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-08 16:09:04,243 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {30#true} {30#true} #33#return; {30#true} is VALID [2020-07-08 16:09:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:04,338 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} ~n := #in~n; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-08 16:09:04,339 INFO L280 TraceCheckUtils]: 1: Hoare triple {41#(= sum_~n |sum_#in~n|)} ~m := #in~m; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-08 16:09:04,341 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#(= sum_~n |sum_#in~n|)} assume ~n <= 0; {42#(and (= sum_~n |sum_#in~n|) (<= sum_~n 0))} is VALID [2020-07-08 16:09:04,343 INFO L280 TraceCheckUtils]: 3: Hoare triple {42#(and (= sum_~n |sum_#in~n|) (<= sum_~n 0))} #res := ~m + ~n; {43#(<= |sum_#in~n| 0)} is VALID [2020-07-08 16:09:04,344 INFO L280 TraceCheckUtils]: 4: Hoare triple {43#(<= |sum_#in~n| 0)} assume true; {43#(<= |sum_#in~n| 0)} is VALID [2020-07-08 16:09:04,348 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {43#(<= |sum_#in~n| 0)} {34#(<= 25 main_~a~0)} #39#return; {31#false} is VALID [2020-07-08 16:09:04,349 INFO L263 TraceCheckUtils]: 0: Hoare triple {30#true} call ULTIMATE.init(); {30#true} is VALID [2020-07-08 16:09:04,350 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} assume true; {30#true} is VALID [2020-07-08 16:09:04,350 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {30#true} {30#true} #33#return; {30#true} is VALID [2020-07-08 16:09:04,351 INFO L263 TraceCheckUtils]: 3: Hoare triple {30#true} call #t~ret2 := main(); {30#true} is VALID [2020-07-08 16:09:04,353 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#true} ~a~0 := 25; {34#(<= 25 main_~a~0)} is VALID [2020-07-08 16:09:04,355 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#(<= 25 main_~a~0)} ~b~0 := 0; {34#(<= 25 main_~a~0)} is VALID [2020-07-08 16:09:04,356 INFO L263 TraceCheckUtils]: 6: Hoare triple {34#(<= 25 main_~a~0)} call #t~ret1 := sum(~a~0, ~b~0); {30#true} is VALID [2020-07-08 16:09:04,357 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#true} ~n := #in~n; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-08 16:09:04,359 INFO L280 TraceCheckUtils]: 8: Hoare triple {41#(= sum_~n |sum_#in~n|)} ~m := #in~m; {41#(= sum_~n |sum_#in~n|)} is VALID [2020-07-08 16:09:04,361 INFO L280 TraceCheckUtils]: 9: Hoare triple {41#(= sum_~n |sum_#in~n|)} assume ~n <= 0; {42#(and (= sum_~n |sum_#in~n|) (<= sum_~n 0))} is VALID [2020-07-08 16:09:04,362 INFO L280 TraceCheckUtils]: 10: Hoare triple {42#(and (= sum_~n |sum_#in~n|) (<= sum_~n 0))} #res := ~m + ~n; {43#(<= |sum_#in~n| 0)} is VALID [2020-07-08 16:09:04,364 INFO L280 TraceCheckUtils]: 11: Hoare triple {43#(<= |sum_#in~n| 0)} assume true; {43#(<= |sum_#in~n| 0)} is VALID [2020-07-08 16:09:04,367 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {43#(<= |sum_#in~n| 0)} {34#(<= 25 main_~a~0)} #39#return; {31#false} is VALID [2020-07-08 16:09:04,368 INFO L280 TraceCheckUtils]: 13: Hoare triple {31#false} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {31#false} is VALID [2020-07-08 16:09:04,368 INFO L280 TraceCheckUtils]: 14: Hoare triple {31#false} ~result~0 := #t~ret1; {31#false} is VALID [2020-07-08 16:09:04,368 INFO L280 TraceCheckUtils]: 15: Hoare triple {31#false} havoc #t~ret1; {31#false} is VALID [2020-07-08 16:09:04,369 INFO L280 TraceCheckUtils]: 16: Hoare triple {31#false} assume ~result~0 != ~a~0 + ~b~0; {31#false} is VALID [2020-07-08 16:09:04,369 INFO L280 TraceCheckUtils]: 17: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-08 16:09:04,372 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 16:09:04,373 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:09:04,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459209550] [2020-07-08 16:09:04,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:09:04,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 16:09:04,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291975060] [2020-07-08 16:09:04,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-08 16:09:04,391 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:09:04,395 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 16:09:04,440 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:09:04,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 16:09:04,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:09:04,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 16:09:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 16:09:04,455 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-08 16:09:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:09:04,765 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-07-08 16:09:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-08 16:09:04,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-08 16:09:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:09:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:09:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2020-07-08 16:09:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:09:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2020-07-08 16:09:04,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 42 transitions. [2020-07-08 16:09:04,864 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 16:09:04,878 INFO L225 Difference]: With dead ends: 39 [2020-07-08 16:09:04,879 INFO L226 Difference]: Without dead ends: 25 [2020-07-08 16:09:04,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 16:09:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-08 16:09:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-08 16:09:04,974 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:09:04,975 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 25 states. [2020-07-08 16:09:04,975 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-08 16:09:04,976 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-08 16:09:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:09:04,982 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-08 16:09:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-08 16:09:04,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:09:04,983 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:09:04,983 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2020-07-08 16:09:04,984 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2020-07-08 16:09:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:09:04,989 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-08 16:09:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-08 16:09:04,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:09:04,990 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:09:04,990 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:09:04,991 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:09:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-08 16:09:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-07-08 16:09:04,996 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-07-08 16:09:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:09:04,997 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-07-08 16:09:04,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 16:09:04,998 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states and 26 transitions. [2020-07-08 16:09:05,059 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:09:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-08 16:09:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-08 16:09:05,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:09:05,062 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] [2020-07-08 16:09:05,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 16:09:05,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:09:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:09:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-07-08 16:09:05,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:09:05,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617878926] [2020-07-08 16:09:05,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-08 16:09:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:05,397 INFO L280 TraceCheckUtils]: 0: Hoare triple {224#true} assume true; {224#true} is VALID [2020-07-08 16:09:05,398 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {224#true} {224#true} #33#return; {224#true} is VALID [2020-07-08 16:09:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:09:05,514 INFO L280 TraceCheckUtils]: 0: Hoare triple {224#true} [41] sumENTRY-->L3_primed: Formula: (let ((.cse1 (+ v_oct_sum_~m_out_1 1)) (.cse0 (+ |v_oct_sum_#in~n_out_1| 1))) (and (<= |v_oct_sum_#in~m_in_1| v_oct_sum_~m_out_1) (<= v_oct_sum_~n_out_1 .cse0) (<= 2 (* 2 v_oct_sum_~n_out_1)) (<= .cse1 |v_oct_sum_#in~m_out_1|) (<= v_oct_sum_~m_out_1 |v_oct_sum_#in~m_in_1|) (<= |v_oct_sum_#in~n_in_1| v_oct_sum_~n_out_1) (<= |v_oct_sum_#in~m_out_1| .cse1) (<= .cse0 v_oct_sum_~n_out_1) (<= v_oct_sum_~n_out_1 |v_oct_sum_#in~n_in_1|))) InVars {sum_#in~m=|v_oct_sum_#in~m_in_1|, sum_#in~n=|v_oct_sum_#in~n_in_1|} OutVars{sum_~n=v_oct_sum_~n_out_1, sum_~m=v_oct_sum_~m_out_1, sum_#in~m=|v_oct_sum_#in~m_out_1|, sum_#in~n=|v_oct_sum_#in~n_out_1|} AuxVars[] AssignedVars[sum_~n, sum_~m, sum_#in~m, sum_#in~n] {224#true} is VALID [2020-07-08 16:09:05,515 INFO L280 TraceCheckUtils]: 1: Hoare triple {224#true} [40] L3_primed-->L3: Formula: (= v_sum_~n_1 |v_sum_#in~n_1|) InVars {sum_#in~n=|v_sum_#in~n_1|} OutVars{sum_~n=v_sum_~n_1, sum_#in~n=|v_sum_#in~n_1|} AuxVars[] AssignedVars[sum_~n] {237#(<= |sum_#in~n| (+ sum_~n 1))} is VALID [2020-07-08 16:09:05,516 INFO L280 TraceCheckUtils]: 2: Hoare triple {237#(<= |sum_#in~n| (+ sum_~n 1))} ~m := #in~m; {237#(<= |sum_#in~n| (+ sum_~n 1))} is VALID [2020-07-08 16:09:05,517 INFO L280 TraceCheckUtils]: 3: Hoare triple {237#(<= |sum_#in~n| (+ sum_~n 1))} assume ~n <= 0; {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,518 INFO L280 TraceCheckUtils]: 4: Hoare triple {238#(<= |sum_#in~n| 1)} #res := ~m + ~n; {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,519 INFO L280 TraceCheckUtils]: 5: Hoare triple {238#(<= |sum_#in~n| 1)} [43] sumFINAL-->sumEXIT_primed: Formula: (let ((.cse25 (* 2 |v_oct_sum_#res_in_1|)) (.cse22 (* 2 |v_oct_sum_#res_out_1|))) (let ((.cse1 (<= .cse22 4294967294)) (.cse0 (<= .cse25 4294967294)) (.cse5 (<= .cse25 4294967294)) (.cse6 (<= 0 (+ .cse25 4294967296))) (.cse2 (<= 0 (+ .cse22 4294967296))) (.cse7 (<= .cse22 4294967294)) (.cse3 (<= 0 (+ .cse25 4294967296))) (.cse8 (<= 0 (+ .cse22 4294967296))) (.cse18 (<= |v_oct_sum_#res_in_1| |v_oct_sum_#res_out_1|)) (.cse12 (<= 0 (+ .cse25 4294967296))) (.cse14 (<= .cse22 4294967294)) (.cse11 (<= 0 (+ .cse22 4294967296))) (.cse17 (<= 0 (+ .cse25 4294967296))) (.cse10 (<= .cse22 4294967294)) (.cse13 (<= .cse25 4294967294)) (.cse15 (<= 0 (+ .cse22 4294967296))) (.cse24 (<= |v_oct_sum_#res_out_1| |v_oct_sum_#res_in_1|)) (.cse16 (<= .cse25 4294967294))) (or (let ((.cse4 (not .cse18)) (.cse9 (not .cse24))) (and (or (not .cse0) (not .cse1) (not .cse2) (not .cse3) .cse4 (not .cse5) (not .cse6) (not .cse7) (not .cse8) .cse9) (or (not .cse10) (not .cse11) (not .cse12) (not .cse13) (not .cse14) (not .cse15) (not .cse16) (not .cse17) .cse4 .cse9) (let ((.cse23 (<= 0 (+ .cse22 4294967296))) (.cse19 (<= 0 (+ .cse22 4294967296))) (.cse21 (<= .cse22 4294967294))) (or (and .cse18 (let ((.cse20 (<= .cse22 4294967294))) (or (and .cse19 (not .cse20) .cse21) .cse20)) .cse23) (and .cse18 (not .cse23) .cse19 .cse21))) .cse24)) (and .cse18 .cse1 .cse0 .cse5 .cse6 .cse2 .cse7 .cse3 .cse8 .cse24) (and .cse18 .cse12 .cse14 .cse11 .cse17 .cse10 .cse13 .cse15 .cse24 .cse16)))) InVars {sum_#res=|v_oct_sum_#res_in_1|} OutVars{sum_#res=|v_oct_sum_#res_out_1|, sum_#t~ret0=|v_oct_sum_#t~ret0_out_1|} AuxVars[] AssignedVars[sum_#res, sum_#t~ret0] {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,520 INFO L280 TraceCheckUtils]: 6: Hoare triple {238#(<= |sum_#in~n| 1)} [42] sumEXIT_primed-->sumEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,522 INFO L275 TraceCheckUtils]: 7: Hoare quadruple {238#(<= |sum_#in~n| 1)} {228#(<= 25 main_~a~0)} #39#return; {225#false} is VALID [2020-07-08 16:09:05,523 INFO L263 TraceCheckUtils]: 0: Hoare triple {224#true} call ULTIMATE.init(); {224#true} is VALID [2020-07-08 16:09:05,523 INFO L280 TraceCheckUtils]: 1: Hoare triple {224#true} assume true; {224#true} is VALID [2020-07-08 16:09:05,524 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {224#true} {224#true} #33#return; {224#true} is VALID [2020-07-08 16:09:05,524 INFO L263 TraceCheckUtils]: 3: Hoare triple {224#true} call #t~ret2 := main(); {224#true} is VALID [2020-07-08 16:09:05,525 INFO L280 TraceCheckUtils]: 4: Hoare triple {224#true} ~a~0 := 25; {228#(<= 25 main_~a~0)} is VALID [2020-07-08 16:09:05,526 INFO L280 TraceCheckUtils]: 5: Hoare triple {228#(<= 25 main_~a~0)} ~b~0 := 0; {228#(<= 25 main_~a~0)} is VALID [2020-07-08 16:09:05,526 INFO L263 TraceCheckUtils]: 6: Hoare triple {228#(<= 25 main_~a~0)} call #t~ret1 := sum(~a~0, ~b~0); {224#true} is VALID [2020-07-08 16:09:05,527 INFO L280 TraceCheckUtils]: 7: Hoare triple {224#true} [41] sumENTRY-->L3_primed: Formula: (let ((.cse1 (+ v_oct_sum_~m_out_1 1)) (.cse0 (+ |v_oct_sum_#in~n_out_1| 1))) (and (<= |v_oct_sum_#in~m_in_1| v_oct_sum_~m_out_1) (<= v_oct_sum_~n_out_1 .cse0) (<= 2 (* 2 v_oct_sum_~n_out_1)) (<= .cse1 |v_oct_sum_#in~m_out_1|) (<= v_oct_sum_~m_out_1 |v_oct_sum_#in~m_in_1|) (<= |v_oct_sum_#in~n_in_1| v_oct_sum_~n_out_1) (<= |v_oct_sum_#in~m_out_1| .cse1) (<= .cse0 v_oct_sum_~n_out_1) (<= v_oct_sum_~n_out_1 |v_oct_sum_#in~n_in_1|))) InVars {sum_#in~m=|v_oct_sum_#in~m_in_1|, sum_#in~n=|v_oct_sum_#in~n_in_1|} OutVars{sum_~n=v_oct_sum_~n_out_1, sum_~m=v_oct_sum_~m_out_1, sum_#in~m=|v_oct_sum_#in~m_out_1|, sum_#in~n=|v_oct_sum_#in~n_out_1|} AuxVars[] AssignedVars[sum_~n, sum_~m, sum_#in~m, sum_#in~n] {224#true} is VALID [2020-07-08 16:09:05,528 INFO L280 TraceCheckUtils]: 8: Hoare triple {224#true} [40] L3_primed-->L3: Formula: (= v_sum_~n_1 |v_sum_#in~n_1|) InVars {sum_#in~n=|v_sum_#in~n_1|} OutVars{sum_~n=v_sum_~n_1, sum_#in~n=|v_sum_#in~n_1|} AuxVars[] AssignedVars[sum_~n] {237#(<= |sum_#in~n| (+ sum_~n 1))} is VALID [2020-07-08 16:09:05,529 INFO L280 TraceCheckUtils]: 9: Hoare triple {237#(<= |sum_#in~n| (+ sum_~n 1))} ~m := #in~m; {237#(<= |sum_#in~n| (+ sum_~n 1))} is VALID [2020-07-08 16:09:05,530 INFO L280 TraceCheckUtils]: 10: Hoare triple {237#(<= |sum_#in~n| (+ sum_~n 1))} assume ~n <= 0; {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,531 INFO L280 TraceCheckUtils]: 11: Hoare triple {238#(<= |sum_#in~n| 1)} #res := ~m + ~n; {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,532 INFO L280 TraceCheckUtils]: 12: Hoare triple {238#(<= |sum_#in~n| 1)} [43] sumFINAL-->sumEXIT_primed: Formula: (let ((.cse25 (* 2 |v_oct_sum_#res_in_1|)) (.cse22 (* 2 |v_oct_sum_#res_out_1|))) (let ((.cse1 (<= .cse22 4294967294)) (.cse0 (<= .cse25 4294967294)) (.cse5 (<= .cse25 4294967294)) (.cse6 (<= 0 (+ .cse25 4294967296))) (.cse2 (<= 0 (+ .cse22 4294967296))) (.cse7 (<= .cse22 4294967294)) (.cse3 (<= 0 (+ .cse25 4294967296))) (.cse8 (<= 0 (+ .cse22 4294967296))) (.cse18 (<= |v_oct_sum_#res_in_1| |v_oct_sum_#res_out_1|)) (.cse12 (<= 0 (+ .cse25 4294967296))) (.cse14 (<= .cse22 4294967294)) (.cse11 (<= 0 (+ .cse22 4294967296))) (.cse17 (<= 0 (+ .cse25 4294967296))) (.cse10 (<= .cse22 4294967294)) (.cse13 (<= .cse25 4294967294)) (.cse15 (<= 0 (+ .cse22 4294967296))) (.cse24 (<= |v_oct_sum_#res_out_1| |v_oct_sum_#res_in_1|)) (.cse16 (<= .cse25 4294967294))) (or (let ((.cse4 (not .cse18)) (.cse9 (not .cse24))) (and (or (not .cse0) (not .cse1) (not .cse2) (not .cse3) .cse4 (not .cse5) (not .cse6) (not .cse7) (not .cse8) .cse9) (or (not .cse10) (not .cse11) (not .cse12) (not .cse13) (not .cse14) (not .cse15) (not .cse16) (not .cse17) .cse4 .cse9) (let ((.cse23 (<= 0 (+ .cse22 4294967296))) (.cse19 (<= 0 (+ .cse22 4294967296))) (.cse21 (<= .cse22 4294967294))) (or (and .cse18 (let ((.cse20 (<= .cse22 4294967294))) (or (and .cse19 (not .cse20) .cse21) .cse20)) .cse23) (and .cse18 (not .cse23) .cse19 .cse21))) .cse24)) (and .cse18 .cse1 .cse0 .cse5 .cse6 .cse2 .cse7 .cse3 .cse8 .cse24) (and .cse18 .cse12 .cse14 .cse11 .cse17 .cse10 .cse13 .cse15 .cse24 .cse16)))) InVars {sum_#res=|v_oct_sum_#res_in_1|} OutVars{sum_#res=|v_oct_sum_#res_out_1|, sum_#t~ret0=|v_oct_sum_#t~ret0_out_1|} AuxVars[] AssignedVars[sum_#res, sum_#t~ret0] {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,533 INFO L280 TraceCheckUtils]: 13: Hoare triple {238#(<= |sum_#in~n| 1)} [42] sumEXIT_primed-->sumEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#(<= |sum_#in~n| 1)} is VALID [2020-07-08 16:09:05,535 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {238#(<= |sum_#in~n| 1)} {228#(<= 25 main_~a~0)} #39#return; {225#false} is VALID [2020-07-08 16:09:05,535 INFO L280 TraceCheckUtils]: 15: Hoare triple {225#false} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {225#false} is VALID [2020-07-08 16:09:05,536 INFO L280 TraceCheckUtils]: 16: Hoare triple {225#false} ~result~0 := #t~ret1; {225#false} is VALID [2020-07-08 16:09:05,536 INFO L280 TraceCheckUtils]: 17: Hoare triple {225#false} havoc #t~ret1; {225#false} is VALID [2020-07-08 16:09:05,536 INFO L280 TraceCheckUtils]: 18: Hoare triple {225#false} assume ~result~0 != ~a~0 + ~b~0; {225#false} is VALID [2020-07-08 16:09:05,537 INFO L280 TraceCheckUtils]: 19: Hoare triple {225#false} assume !false; {225#false} is VALID [2020-07-08 16:09:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:09:05,836 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:09:05,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617878926] [2020-07-08 16:09:05,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:09:05,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-08 16:09:05,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249717233] [2020-07-08 16:09:05,839 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-07-08 16:09:05,839 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:09:05,840 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states. [2020-07-08 16:09:05,859 WARN L140 InductivityCheck]: Transition 238#(<= |sum_#in~n| 1) ( _ , 241#(and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (< 0 sum_~n)) , #37#return; , 238#(<= |sum_#in~n| 1) ) not inductive [2020-07-08 16:09:05,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 16:09:05,861 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inductivity failed at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.checkInductivity(InductivityCheck.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.(InductivityCheck.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.constructInterpolantAutomaton(BasicCegarLoop.java:583) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 16:09:05,868 INFO L168 Benchmark]: Toolchain (without parser) took 2771.31 ms. Allocated memory was 134.2 MB in the beginning and 223.3 MB in the end (delta: 89.1 MB). Free memory was 99.2 MB in the beginning and 108.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,869 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 134.2 MB. Free memory was 99.0 MB in the beginning and 89.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,871 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,872 INFO L168 Benchmark]: RCFGBuilder took 417.60 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 88.0 MB in the beginning and 161.6 MB in the end (delta: -73.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,873 INFO L168 Benchmark]: TraceAbstraction took 2003.35 ms. Allocated memory was 198.2 MB in the beginning and 223.3 MB in the end (delta: 25.2 MB). Free memory was 160.9 MB in the beginning and 108.4 MB in the end (delta: 52.4 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-07-08 16:09:05,878 INFO L336 ainManager$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 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 134.2 MB. Free memory was 99.0 MB in the beginning and 89.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 134.2 MB. Free memory was 89.5 MB in the beginning and 88.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.60 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 88.0 MB in the beginning and 161.6 MB in the end (delta: -73.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2003.35 ms. Allocated memory was 198.2 MB in the beginning and 223.3 MB in the end (delta: 25.2 MB). Free memory was 160.9 MB in the beginning and 108.4 MB in the end (delta: 52.4 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inductivity failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inductivity failed: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...