/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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 18:37:33,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 18:37:33,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 18:37:33,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 18:37:33,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 18:37:33,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 18:37:33,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 18:37:33,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 18:37:33,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 18:37:33,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 18:37:33,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 18:37:33,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 18:37:33,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 18:37:33,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 18:37:33,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 18:37:33,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 18:37:33,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 18:37:33,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 18:37:33,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 18:37:33,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 18:37:33,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 18:37:33,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 18:37:33,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 18:37:33,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 18:37:33,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 18:37:33,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 18:37:33,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 18:37:33,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 18:37:33,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 18:37:33,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 18:37:33,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 18:37:33,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 18:37:33,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 18:37:33,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 18:37:33,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 18:37:33,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 18:37:33,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 18:37:33,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 18:37:33,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 18:37:33,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 18:37:33,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 18:37:33,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 18:37:33,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 18:37:33,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 18:37:33,590 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 18:37:33,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 18:37:33,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 18:37:33,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 18:37:33,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 18:37:33,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 18:37:33,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 18:37:33,591 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 18:37:33,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 18:37:33,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 18:37:33,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 18:37:33,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 18:37:33,935 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 18:37:33,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-07-10 18:37:34,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0bc347f4/8d7b76494a634896afcd88cc7089be57/FLAGc82b58762 [2020-07-10 18:37:34,538 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 18:37:34,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-07-10 18:37:34,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0bc347f4/8d7b76494a634896afcd88cc7089be57/FLAGc82b58762 [2020-07-10 18:37:34,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0bc347f4/8d7b76494a634896afcd88cc7089be57 [2020-07-10 18:37:34,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 18:37:34,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 18:37:34,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:34,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 18:37:34,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 18:37:34,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:34" (1/1) ... [2020-07-10 18:37:34,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317546e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:34, skipping insertion in model container [2020-07-10 18:37:34,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:34" (1/1) ... [2020-07-10 18:37:34,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 18:37:34,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 18:37:35,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:35,164 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 18:37:35,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:35,199 INFO L208 MainTranslator]: Completed translation [2020-07-10 18:37:35,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35 WrapperNode [2020-07-10 18:37:35,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:35,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 18:37:35,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 18:37:35,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 18:37:35,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (1/1) ... [2020-07-10 18:37:35,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 18:37:35,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 18:37:35,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 18:37:35,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 18:37:35,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (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 [2020-07-10 18:37:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 18:37:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 18:37:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-10 18:37:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-10 18:37:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 18:37:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 18:37:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 18:37:35,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 18:37:35,734 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 18:37:35,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:35 BoogieIcfgContainer [2020-07-10 18:37:35,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 18:37:35,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 18:37:35,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 18:37:35,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 18:37:35,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 06:37:34" (1/3) ... [2020-07-10 18:37:35,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe09f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:35, skipping insertion in model container [2020-07-10 18:37:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:35" (2/3) ... [2020-07-10 18:37:35,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe09f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:35, skipping insertion in model container [2020-07-10 18:37:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:35" (3/3) ... [2020-07-10 18:37:35,749 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-07-10 18:37:35,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 18:37:35,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 18:37:35,789 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 18:37:35,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 18:37:35,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 18:37:35,814 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 18:37:35,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 18:37:35,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 18:37:35,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 18:37:35,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 18:37:35,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 18:37:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-10 18:37:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-10 18:37:35,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:35,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:37:35,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:35,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-07-10 18:37:35,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:35,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373408088] [2020-07-10 18:37:35,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:36,093 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:36,094 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:36,155 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:36,157 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,159 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,160 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,162 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 5 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:36,164 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-10 18:37:36,164 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:36,165 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:36,165 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret5 := main(); {48#true} is VALID [2020-07-10 18:37:36,167 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} ~x~0 := 5; {52#(<= 5 main_~x~0)} is VALID [2020-07-10 18:37:36,167 INFO L263 TraceCheckUtils]: 5: Hoare triple {52#(<= 5 main_~x~0)} call #t~ret4 := fibo1(~x~0); {48#true} is VALID [2020-07-10 18:37:36,168 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:36,170 INFO L280 TraceCheckUtils]: 7: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,171 INFO L280 TraceCheckUtils]: 8: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,172 INFO L280 TraceCheckUtils]: 9: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:36,175 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 5 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:36,176 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {49#false} is VALID [2020-07-10 18:37:36,176 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#false} ~result~0 := #t~ret4; {49#false} is VALID [2020-07-10 18:37:36,176 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#false} havoc #t~ret4; {49#false} is VALID [2020-07-10 18:37:36,177 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} assume 5 != ~result~0; {49#false} is VALID [2020-07-10 18:37:36,177 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-10 18:37:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 18:37:36,180 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:36,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373408088] [2020-07-10 18:37:36,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:36,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:36,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097508140] [2020-07-10 18:37:36,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:36,196 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:36,201 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:36,239 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:36,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:36,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:36,256 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-07-10 18:37:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:36,707 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-07-10 18:37:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:36,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:36,729 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 67 transitions. [2020-07-10 18:37:36,873 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:36,890 INFO L225 Difference]: With dead ends: 58 [2020-07-10 18:37:36,891 INFO L226 Difference]: Without dead ends: 42 [2020-07-10 18:37:36,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 18:37:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-10 18:37:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-10 18:37:36,990 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:36,991 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:36,992 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:36,992 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:37,001 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:37,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:37,002 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:37,003 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:37,003 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:37,009 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:37,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:37,011 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:37,011 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:37,011 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:37,018 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-07-10 18:37:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:37,018 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:37,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:37,019 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:37,096 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 18:37:37,097 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:37,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:37:37,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 18:37:37,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:37,099 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-07-10 18:37:37,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:37,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477896847] [2020-07-10 18:37:37,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:37,137 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:37,137 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:37,176 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:37,177 INFO L280 TraceCheckUtils]: 1: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume !(~n < 1); {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:37,178 INFO L280 TraceCheckUtils]: 2: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume 1 == ~n; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,179 INFO L280 TraceCheckUtils]: 3: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,180 INFO L280 TraceCheckUtils]: 4: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,182 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 5 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:37,183 INFO L263 TraceCheckUtils]: 0: Hoare triple {348#true} call ULTIMATE.init(); {348#true} is VALID [2020-07-10 18:37:37,183 INFO L280 TraceCheckUtils]: 1: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:37,183 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:37,184 INFO L263 TraceCheckUtils]: 3: Hoare triple {348#true} call #t~ret5 := main(); {348#true} is VALID [2020-07-10 18:37:37,185 INFO L280 TraceCheckUtils]: 4: Hoare triple {348#true} ~x~0 := 5; {352#(<= 5 main_~x~0)} is VALID [2020-07-10 18:37:37,185 INFO L263 TraceCheckUtils]: 5: Hoare triple {352#(<= 5 main_~x~0)} call #t~ret4 := fibo1(~x~0); {348#true} is VALID [2020-07-10 18:37:37,186 INFO L280 TraceCheckUtils]: 6: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:37,187 INFO L280 TraceCheckUtils]: 7: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume !(~n < 1); {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:37,188 INFO L280 TraceCheckUtils]: 8: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume 1 == ~n; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,189 INFO L280 TraceCheckUtils]: 9: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,190 INFO L280 TraceCheckUtils]: 10: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:37,191 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 5 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:37,192 INFO L280 TraceCheckUtils]: 12: Hoare triple {349#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {349#false} is VALID [2020-07-10 18:37:37,192 INFO L280 TraceCheckUtils]: 13: Hoare triple {349#false} ~result~0 := #t~ret4; {349#false} is VALID [2020-07-10 18:37:37,192 INFO L280 TraceCheckUtils]: 14: Hoare triple {349#false} havoc #t~ret4; {349#false} is VALID [2020-07-10 18:37:37,192 INFO L280 TraceCheckUtils]: 15: Hoare triple {349#false} assume 5 != ~result~0; {349#false} is VALID [2020-07-10 18:37:37,193 INFO L280 TraceCheckUtils]: 16: Hoare triple {349#false} assume !false; {349#false} is VALID [2020-07-10 18:37:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 18:37:37,194 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:37,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477896847] [2020-07-10 18:37:37,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:37,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:37,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161733296] [2020-07-10 18:37:37,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:37,196 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:37,197 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:37,219 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:37,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:37,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:37,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:37,221 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-07-10 18:37:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:37,509 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-10 18:37:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:37,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:37,516 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 55 transitions. [2020-07-10 18:37:37,587 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:37,590 INFO L225 Difference]: With dead ends: 50 [2020-07-10 18:37:37,590 INFO L226 Difference]: Without dead ends: 44 [2020-07-10 18:37:37,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 18:37:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-10 18:37:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-07-10 18:37:37,641 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:37,641 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:37,642 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:37,642 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:37,646 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:37,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:37,648 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:37,648 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:37,648 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:37,653 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:37,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:37,655 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:37,655 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:37,655 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:37,658 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-07-10 18:37:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:37,659 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:37,747 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 18:37:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 18:37:37,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:37,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:37:37,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 18:37:37,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:37,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-07-10 18:37:37,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:37,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618112971] [2020-07-10 18:37:37,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:37,795 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:133) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:101) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:82) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:219) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) 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) [2020-07-10 18:37:37,804 INFO L168 Benchmark]: Toolchain (without parser) took 2898.75 ms. Allocated memory was 140.5 MB in the beginning and 222.3 MB in the end (delta: 81.8 MB). Free memory was 98.6 MB in the beginning and 79.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,806 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.54 ms. Allocated memory is still 140.5 MB. Free memory was 98.4 MB in the beginning and 88.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,808 INFO L168 Benchmark]: Boogie Preprocessor took 130.64 ms. Allocated memory was 140.5 MB in the beginning and 198.2 MB in the end (delta: 57.7 MB). Free memory was 88.1 MB in the beginning and 176.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,810 INFO L168 Benchmark]: RCFGBuilder took 408.72 ms. Allocated memory is still 198.2 MB. Free memory was 176.7 MB in the beginning and 155.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,813 INFO L168 Benchmark]: TraceAbstraction took 2058.12 ms. Allocated memory was 198.2 MB in the beginning and 222.3 MB in the end (delta: 24.1 MB). Free memory was 154.9 MB in the beginning and 79.3 MB in the end (delta: 75.6 MB). Peak memory consumption was 99.7 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:37,828 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 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.54 ms. Allocated memory is still 140.5 MB. Free memory was 98.4 MB in the beginning and 88.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.64 ms. Allocated memory was 140.5 MB in the beginning and 198.2 MB in the end (delta: 57.7 MB). Free memory was 88.1 MB in the beginning and 176.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.72 ms. Allocated memory is still 198.2 MB. Free memory was 176.7 MB in the beginning and 155.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2058.12 ms. Allocated memory was 198.2 MB in the beginning and 222.3 MB in the end (delta: 24.1 MB). Free memory was 154.9 MB in the beginning and 79.3 MB in the end (delta: 75.6 MB). Peak memory consumption was 99.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...