/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/id_i20_o20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:14:26,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:14:26,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:14:26,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:14:26,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:14:26,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:14:26,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:14:26,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:14:26,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:14:26,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:14:26,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:14:26,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:14:26,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:14:26,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:14:26,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:14:26,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:14:26,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:14:26,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:14:26,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:14:26,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:14:26,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:14:26,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:14:26,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:14:26,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:14:26,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:14:26,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:14:26,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:14:26,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:14:26,335 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 00:14:26,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:14:26,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:14:26,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:14:26,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:14:26,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:14:26,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:14:26,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:14:26,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:14:26,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:14:26,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:14:26,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:14:26,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:14:26,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:14:26,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:14:26,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:14:26,373 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:14:26,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:14:26,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:14:26,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:14:26,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:14:26,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:14:26,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:14:26,376 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:14:26,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:14:26,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:14:26,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:14:26,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:14:26,696 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:14:26,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2020-07-18 00:14:26,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5be5aec/c2a934a24bff412192e936b1ae595659/FLAG3772860d4 [2020-07-18 00:14:27,264 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:14:27,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2020-07-18 00:14:27,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5be5aec/c2a934a24bff412192e936b1ae595659/FLAG3772860d4 [2020-07-18 00:14:27,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5be5aec/c2a934a24bff412192e936b1ae595659 [2020-07-18 00:14:27,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:14:27,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:14:27,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:27,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:14:27,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:14:27,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3615f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27, skipping insertion in model container [2020-07-18 00:14:27,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:14:27,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:14:27,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:27,794 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:14:27,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:27,825 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:14:27,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27 WrapperNode [2020-07-18 00:14:27,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:27,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:14:27,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:14:27,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:14:27,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (1/1) ... [2020-07-18 00:14:27,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:14:27,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:14:27,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:14:27,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:14:27,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (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 00:14:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:14:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:14:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-18 00:14:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:14:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:14:28,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:14:28,238 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:14:28,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:28 BoogieIcfgContainer [2020-07-18 00:14:28,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:14:28,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:14:28,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:14:28,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:14:28,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:14:27" (1/3) ... [2020-07-18 00:14:28,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b073bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:28, skipping insertion in model container [2020-07-18 00:14:28,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:27" (2/3) ... [2020-07-18 00:14:28,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b073bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:28, skipping insertion in model container [2020-07-18 00:14:28,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:28" (3/3) ... [2020-07-18 00:14:28,263 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2020-07-18 00:14:28,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:14:28,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:14:28,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:14:28,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:14:28,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:14:28,333 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:14:28,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:14:28,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:14:28,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:14:28,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:14:28,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:14:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-18 00:14:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:14:28,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:14:28,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:14:28,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:14:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:14:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-07-18 00:14:28,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:14:28,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003863463] [2020-07-18 00:14:28,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:14:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:28,581 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-18 00:14:28,582 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {28#true} {28#true} #31#return; {28#true} is VALID [2020-07-18 00:14:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:28,695 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} ~x := #in~x; {38#(= |id_#in~x| id_~x)} is VALID [2020-07-18 00:14:28,696 INFO L280 TraceCheckUtils]: 1: Hoare triple {38#(= |id_#in~x| id_~x)} assume 0 == ~x; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,698 INFO L280 TraceCheckUtils]: 2: Hoare triple {39#(= 0 |id_#in~x|)} #res := 0; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,700 INFO L280 TraceCheckUtils]: 3: Hoare triple {39#(= 0 |id_#in~x|)} assume true; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,704 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {39#(= 0 |id_#in~x|)} {32#(<= 20 main_~input~0)} #35#return; {29#false} is VALID [2020-07-18 00:14:28,705 INFO L263 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2020-07-18 00:14:28,705 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-18 00:14:28,706 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #31#return; {28#true} is VALID [2020-07-18 00:14:28,706 INFO L263 TraceCheckUtils]: 3: Hoare triple {28#true} call #t~ret2 := main(); {28#true} is VALID [2020-07-18 00:14:28,709 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#true} ~input~0 := 20; {32#(<= 20 main_~input~0)} is VALID [2020-07-18 00:14:28,710 INFO L263 TraceCheckUtils]: 5: Hoare triple {32#(<= 20 main_~input~0)} call #t~ret1 := id(~input~0); {28#true} is VALID [2020-07-18 00:14:28,711 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#true} ~x := #in~x; {38#(= |id_#in~x| id_~x)} is VALID [2020-07-18 00:14:28,713 INFO L280 TraceCheckUtils]: 7: Hoare triple {38#(= |id_#in~x| id_~x)} assume 0 == ~x; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,715 INFO L280 TraceCheckUtils]: 8: Hoare triple {39#(= 0 |id_#in~x|)} #res := 0; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,716 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#(= 0 |id_#in~x|)} assume true; {39#(= 0 |id_#in~x|)} is VALID [2020-07-18 00:14:28,721 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {39#(= 0 |id_#in~x|)} {32#(<= 20 main_~input~0)} #35#return; {29#false} is VALID [2020-07-18 00:14:28,722 INFO L280 TraceCheckUtils]: 11: Hoare triple {29#false} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {29#false} is VALID [2020-07-18 00:14:28,724 INFO L280 TraceCheckUtils]: 12: Hoare triple {29#false} ~result~0 := #t~ret1; {29#false} is VALID [2020-07-18 00:14:28,725 INFO L280 TraceCheckUtils]: 13: Hoare triple {29#false} havoc #t~ret1; {29#false} is VALID [2020-07-18 00:14:28,725 INFO L280 TraceCheckUtils]: 14: Hoare triple {29#false} assume 20 != ~result~0; {29#false} is VALID [2020-07-18 00:14:28,727 INFO L280 TraceCheckUtils]: 15: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-18 00:14:28,731 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 00:14:28,922 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:14:28,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003863463] [2020-07-18 00:14:28,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:14:28,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 00:14:28,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50483814] [2020-07-18 00:14:28,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-07-18 00:14:28,937 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:14:28,941 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 00:14:28,964 WARN L140 InductivityCheck]: Transition 43#(and (= 0 |id_#in~x|) (<= main_~result~0 2147483647) (not (= 20 main_~result~0)) (<= 0 (+ main_~result~0 2147483648))) ( _ , assume !false; , 29#false ) not inductive [2020-07-18 00:14:28,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:14:28,966 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:14:28,972 INFO L168 Benchmark]: Toolchain (without parser) took 1358.96 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 126.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,973 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.01 ms. Allocated memory is still 144.7 MB. Free memory was 101.5 MB in the beginning and 92.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,975 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 144.7 MB. Free memory was 92.2 MB in the beginning and 90.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,976 INFO L168 Benchmark]: RCFGBuilder took 390.16 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 167.4 MB in the end (delta: -76.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,977 INFO L168 Benchmark]: TraceAbstraction took 713.80 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 126.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:28,981 INFO L336 ainManager$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 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 211.01 ms. Allocated memory is still 144.7 MB. Free memory was 101.5 MB in the beginning and 92.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 144.7 MB. Free memory was 92.2 MB in the beginning and 90.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.16 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 167.4 MB in the end (delta: -76.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 713.80 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 126.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 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...