/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_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 18:37:43,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 18:37:43,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 18:37:43,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 18:37:43,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 18:37:43,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 18:37:43,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 18:37:43,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 18:37:43,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 18:37:43,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 18:37:43,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 18:37:43,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 18:37:43,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 18:37:43,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 18:37:43,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 18:37:43,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 18:37:43,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 18:37:43,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 18:37:43,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 18:37:43,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 18:37:43,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 18:37:43,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 18:37:43,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 18:37:43,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 18:37:43,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 18:37:43,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 18:37:43,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 18:37:43,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 18:37:43,421 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 18:37:43,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 18:37:43,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 18:37:43,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 18:37:43,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 18:37:43,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 18:37:43,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 18:37:43,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 18:37:43,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 18:37:43,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 18:37:43,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 18:37:43,436 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 18:37:43,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 18:37:43,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 18:37:43,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 18:37:43,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 18:37:43,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 18:37:43,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 18:37:43,437 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 18:37:43,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 18:37:43,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 18:37:43,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 18:37:43,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 18:37:43,764 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 18:37:43,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-07-10 18:37:43,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d0b38a/ce5e6d88a87e4a69bb3cdf8a268fbd27/FLAG8a1a2825d [2020-07-10 18:37:44,364 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 18:37:44,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-07-10 18:37:44,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d0b38a/ce5e6d88a87e4a69bb3cdf8a268fbd27/FLAG8a1a2825d [2020-07-10 18:37:44,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15d0b38a/ce5e6d88a87e4a69bb3cdf8a268fbd27 [2020-07-10 18:37:44,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 18:37:44,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 18:37:44,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:44,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 18:37:44,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 18:37:44,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:44,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3374a9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44, skipping insertion in model container [2020-07-10 18:37:44,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:44,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 18:37:44,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 18:37:44,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:44,948 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 18:37:44,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:44,978 INFO L208 MainTranslator]: Completed translation [2020-07-10 18:37:44,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44 WrapperNode [2020-07-10 18:37:44,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:44,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 18:37:44,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 18:37:44,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 18:37:44,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:44,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:44,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:44,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:45,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:45,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:45,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (1/1) ... [2020-07-10 18:37:45,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 18:37:45,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 18:37:45,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 18:37:45,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 18:37:45,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (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 18:37:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 18:37:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 18:37:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-10 18:37:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-10 18:37:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 18:37:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 18:37:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 18:37:45,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 18:37:45,494 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 18:37:45,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:45 BoogieIcfgContainer [2020-07-10 18:37:45,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 18:37:45,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 18:37:45,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 18:37:45,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 18:37:45,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 06:37:44" (1/3) ... [2020-07-10 18:37:45,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde5d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:45, skipping insertion in model container [2020-07-10 18:37:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:44" (2/3) ... [2020-07-10 18:37:45,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde5d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:45, skipping insertion in model container [2020-07-10 18:37:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:45" (3/3) ... [2020-07-10 18:37:45,508 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-07-10 18:37:45,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 18:37:45,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 18:37:45,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 18:37:45,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 18:37:45,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 18:37:45,568 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 18:37:45,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 18:37:45,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 18:37:45,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 18:37:45,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 18:37:45,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 18:37:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-10 18:37:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-10 18:37:45,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:45,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:37:45,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-07-10 18:37:45,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:45,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702458417] [2020-07-10 18:37:45,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:45,856 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:45,857 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:45,915 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:45,917 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 18:37:45,918 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:45,920 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:45,922 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 6 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:45,923 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-10 18:37:45,924 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:45,924 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:45,925 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret5 := main(); {48#true} is VALID [2020-07-10 18:37:45,926 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} ~x~0 := 6; {52#(<= 6 main_~x~0)} is VALID [2020-07-10 18:37:45,927 INFO L263 TraceCheckUtils]: 5: Hoare triple {52#(<= 6 main_~x~0)} call #t~ret4 := fibo1(~x~0); {48#true} is VALID [2020-07-10 18:37:45,928 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:45,929 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 18:37:45,930 INFO L280 TraceCheckUtils]: 8: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:45,932 INFO L280 TraceCheckUtils]: 9: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:45,934 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 6 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:45,935 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {49#false} is VALID [2020-07-10 18:37:45,935 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#false} ~result~0 := #t~ret4; {49#false} is VALID [2020-07-10 18:37:45,936 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#false} havoc #t~ret4; {49#false} is VALID [2020-07-10 18:37:45,936 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} assume 8 == ~result~0; {49#false} is VALID [2020-07-10 18:37:45,937 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-10 18:37:45,939 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 18:37:45,939 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:45,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702458417] [2020-07-10 18:37:45,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:45,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:45,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937102780] [2020-07-10 18:37:45,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:45,955 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:45,959 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:45,997 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 18:37:45,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:45,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:46,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:46,011 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-07-10 18:37:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:46,458 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-07-10 18:37:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:46,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:46,483 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 67 transitions. [2020-07-10 18:37:46,608 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 18:37:46,624 INFO L225 Difference]: With dead ends: 58 [2020-07-10 18:37:46,624 INFO L226 Difference]: Without dead ends: 42 [2020-07-10 18:37:46,628 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 18:37:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-10 18:37:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-10 18:37:46,714 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:46,715 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:46,715 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:46,715 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:46,724 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:46,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:46,726 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:46,727 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:46,727 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:46,734 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:46,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:46,735 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:46,736 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:46,736 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:46,743 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-07-10 18:37:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:46,744 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:46,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:46,744 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:46,811 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 18:37:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 18:37:46,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:46,813 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 18:37:46,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 18:37:46,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-07-10 18:37:46,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:46,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891760651] [2020-07-10 18:37:46,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:46,849 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:46,850 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:46,914 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:46,919 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 18:37:46,920 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 18:37:46,921 INFO L280 TraceCheckUtils]: 3: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:46,922 INFO L280 TraceCheckUtils]: 4: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:46,924 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 6 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:46,925 INFO L263 TraceCheckUtils]: 0: Hoare triple {348#true} call ULTIMATE.init(); {348#true} is VALID [2020-07-10 18:37:46,925 INFO L280 TraceCheckUtils]: 1: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:46,926 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:46,926 INFO L263 TraceCheckUtils]: 3: Hoare triple {348#true} call #t~ret5 := main(); {348#true} is VALID [2020-07-10 18:37:46,930 INFO L280 TraceCheckUtils]: 4: Hoare triple {348#true} ~x~0 := 6; {352#(<= 6 main_~x~0)} is VALID [2020-07-10 18:37:46,930 INFO L263 TraceCheckUtils]: 5: Hoare triple {352#(<= 6 main_~x~0)} call #t~ret4 := fibo1(~x~0); {348#true} is VALID [2020-07-10 18:37:46,931 INFO L280 TraceCheckUtils]: 6: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:46,932 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 18:37:46,932 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 18:37:46,933 INFO L280 TraceCheckUtils]: 9: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:46,934 INFO L280 TraceCheckUtils]: 10: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:46,936 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 6 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:46,937 INFO L280 TraceCheckUtils]: 12: Hoare triple {349#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {349#false} is VALID [2020-07-10 18:37:46,937 INFO L280 TraceCheckUtils]: 13: Hoare triple {349#false} ~result~0 := #t~ret4; {349#false} is VALID [2020-07-10 18:37:46,938 INFO L280 TraceCheckUtils]: 14: Hoare triple {349#false} havoc #t~ret4; {349#false} is VALID [2020-07-10 18:37:46,939 INFO L280 TraceCheckUtils]: 15: Hoare triple {349#false} assume 8 == ~result~0; {349#false} is VALID [2020-07-10 18:37:46,940 INFO L280 TraceCheckUtils]: 16: Hoare triple {349#false} assume !false; {349#false} is VALID [2020-07-10 18:37:46,942 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 18:37:46,942 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:46,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891760651] [2020-07-10 18:37:46,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:46,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:46,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382280343] [2020-07-10 18:37:46,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:46,947 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:46,947 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:46,966 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 18:37:46,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:46,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:46,968 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-07-10 18:37:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:47,259 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-10 18:37:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:47,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:47,267 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 55 transitions. [2020-07-10 18:37:47,335 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 18:37:47,338 INFO L225 Difference]: With dead ends: 50 [2020-07-10 18:37:47,339 INFO L226 Difference]: Without dead ends: 44 [2020-07-10 18:37:47,340 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 18:37:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-10 18:37:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-07-10 18:37:47,387 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:47,387 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:47,388 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:47,388 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:47,394 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:47,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:47,395 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:47,396 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:47,396 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:47,401 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:47,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:47,403 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:47,403 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:47,403 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:47,408 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-07-10 18:37:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:47,408 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:47,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:47,409 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:47,487 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 18:37:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 18:37:47,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:47,491 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 18:37:47,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 18:37:47,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-07-10 18:37:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854129397] [2020-07-10 18:37:47,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:47,524 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 18:37:47,530 INFO L168 Benchmark]: Toolchain (without parser) took 2790.17 ms. Allocated memory was 135.3 MB in the beginning and 226.0 MB in the end (delta: 90.7 MB). Free memory was 98.9 MB in the beginning and 81.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,531 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 135.3 MB. Free memory was 117.5 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.53 ms. Allocated memory is still 135.3 MB. Free memory was 98.7 MB in the beginning and 88.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,533 INFO L168 Benchmark]: Boogie Preprocessor took 113.38 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 88.9 MB in the beginning and 178.4 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,534 INFO L168 Benchmark]: RCFGBuilder took 406.39 ms. Allocated memory is still 199.2 MB. Free memory was 178.4 MB in the beginning and 156.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,535 INFO L168 Benchmark]: TraceAbstraction took 2026.32 ms. Allocated memory was 199.2 MB in the beginning and 226.0 MB in the end (delta: 26.7 MB). Free memory was 156.7 MB in the beginning and 81.0 MB in the end (delta: 75.7 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:47,540 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 0.98 ms. Allocated memory is still 135.3 MB. Free memory was 117.5 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.53 ms. Allocated memory is still 135.3 MB. Free memory was 98.7 MB in the beginning and 88.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.38 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 88.9 MB in the beginning and 178.4 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.39 ms. Allocated memory is still 199.2 MB. Free memory was 178.4 MB in the beginning and 156.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2026.32 ms. Allocated memory was 199.2 MB in the beginning and 226.0 MB in the end (delta: 26.7 MB). Free memory was 156.7 MB in the beginning and 81.0 MB in the end (delta: 75.7 MB). Peak memory consumption was 102.4 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...