/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/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:14:16,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:14:16,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:14:16,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:14:16,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:14:16,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:14:16,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:14:16,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:14:16,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:14:16,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:14:16,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:14:16,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:14:16,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:14:16,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:14:16,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:14:16,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:14:16,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:14:16,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:14:16,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:14:16,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:14:16,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:14:16,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:14:16,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:14:16,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:14:16,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:14:16,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:14:16,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:14:16,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:14:16,251 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 00:14:16,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:14:16,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:14:16,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:14:16,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:14:16,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:14:16,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:14:16,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:14:16,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:14:16,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:14:16,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:14:16,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:14:16,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:14:16,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:14:16,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:14:16,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:14:16,263 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:14:16,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:14:16,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:14:16,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:14:16,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:14:16,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:14:16,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:14:16,264 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:14:16,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:14:16,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:14:16,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:14:16,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:14:16,535 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:14:16,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-07-18 00:14:16,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44377983a/0fc0c0b5086a4ae89a0322fac463a82a/FLAG46f069476 [2020-07-18 00:14:17,053 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:14:17,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-07-18 00:14:17,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44377983a/0fc0c0b5086a4ae89a0322fac463a82a/FLAG46f069476 [2020-07-18 00:14:17,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44377983a/0fc0c0b5086a4ae89a0322fac463a82a [2020-07-18 00:14:17,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:14:17,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:14:17,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:17,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:14:17,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:14:17,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791d2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17, skipping insertion in model container [2020-07-18 00:14:17,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:14:17,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:14:17,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:17,660 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:14:17,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:17,692 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:14:17,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17 WrapperNode [2020-07-18 00:14:17,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:17,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:14:17,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:14:17,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:14:17,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (1/1) ... [2020-07-18 00:14:17,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:14:17,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:14:17,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:14:17,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:14:17,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (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 00:14:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:14:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:14:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-18 00:14:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-18 00:14:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-18 00:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-18 00:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:14:18,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:14:18,160 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:14:18,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:18 BoogieIcfgContainer [2020-07-18 00:14:18,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:14:18,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:14:18,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:14:18,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:14:18,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:14:17" (1/3) ... [2020-07-18 00:14:18,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a943a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:18, skipping insertion in model container [2020-07-18 00:14:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:17" (2/3) ... [2020-07-18 00:14:18,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a943a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:18, skipping insertion in model container [2020-07-18 00:14:18,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:18" (3/3) ... [2020-07-18 00:14:18,175 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-07-18 00:14:18,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:14:18,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:14:18,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:14:18,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:14:18,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:14:18,235 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:14:18,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:14:18,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:14:18,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:14:18,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:14:18,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:14:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-18 00:14:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:14:18,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:14:18,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:14:18,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:14:18,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:14:18,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-07-18 00:14:18,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:14:18,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501413231] [2020-07-18 00:14:18,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:14:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:18,497 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-18 00:14:18,498 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-18 00:14:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:18,548 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-18 00:14:18,550 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,551 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,552 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,554 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 4 main_~x~0)} #63#return; {49#false} is VALID [2020-07-18 00:14:18,555 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-18 00:14:18,556 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-18 00:14:18,556 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-18 00:14:18,557 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret5 := main(); {48#true} is VALID [2020-07-18 00:14:18,558 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} ~x~0 := 4; {52#(<= 4 main_~x~0)} is VALID [2020-07-18 00:14:18,559 INFO L263 TraceCheckUtils]: 5: Hoare triple {52#(<= 4 main_~x~0)} call #t~ret4 := fibo1(~x~0); {48#true} is VALID [2020-07-18 00:14:18,560 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-18 00:14:18,561 INFO L280 TraceCheckUtils]: 7: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,563 INFO L280 TraceCheckUtils]: 8: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,563 INFO L280 TraceCheckUtils]: 9: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-18 00:14:18,566 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 4 main_~x~0)} #63#return; {49#false} is VALID [2020-07-18 00:14:18,566 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {49#false} is VALID [2020-07-18 00:14:18,567 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#false} ~result~0 := #t~ret4; {49#false} is VALID [2020-07-18 00:14:18,567 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#false} havoc #t~ret4; {49#false} is VALID [2020-07-18 00:14:18,568 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} assume 3 != ~result~0; {49#false} is VALID [2020-07-18 00:14:18,568 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-18 00:14:18,570 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 00:14:18,713 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:14:18,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501413231] [2020-07-18 00:14:18,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:14:18,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 00:14:18,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421684731] [2020-07-18 00:14:18,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-07-18 00:14:18,728 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:14:18,731 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 00:14:18,762 WARN L140 InductivityCheck]: Transition 63#(and (<= 0 (+ main_~result~0 2147483648)) (<= main_~result~0 2147483647) (not (= 3 main_~result~0)) (<= |fibo1_#in~n| 0)) ( _ , assume !false; , 49#false ) not inductive [2020-07-18 00:14:18,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:14:18,763 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:103) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:14:18,769 INFO L168 Benchmark]: Toolchain (without parser) took 1338.93 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 118.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,770 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.11 ms. Allocated memory is still 144.7 MB. Free memory was 103.2 MB in the beginning and 93.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,772 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 144.7 MB. Free memory was 93.4 MB in the beginning and 91.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,773 INFO L168 Benchmark]: RCFGBuilder took 443.48 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 160.9 MB in the end (delta: -69.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,774 INFO L168 Benchmark]: TraceAbstraction took 597.67 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 118.3 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:18,778 INFO L336 ainManager$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 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.11 ms. Allocated memory is still 144.7 MB. Free memory was 103.2 MB in the beginning and 93.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 144.7 MB. Free memory was 93.4 MB in the beginning and 91.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.48 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 160.9 MB in the end (delta: -69.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 597.67 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 118.3 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 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...