/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_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 15:55:56,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 15:55:56,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 15:55:56,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 15:55:56,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 15:55:56,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 15:55:56,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 15:55:56,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 15:55:56,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 15:55:56,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 15:55:56,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 15:55:56,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 15:55:56,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 15:55:56,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 15:55:56,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 15:55:56,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 15:55:56,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 15:55:56,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 15:55:57,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 15:55:57,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 15:55:57,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 15:55:57,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 15:55:57,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 15:55:57,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 15:55:57,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 15:55:57,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 15:55:57,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 15:55:57,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 15:55:57,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 15:55:57,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 15:55:57,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 15:55:57,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 15:55:57,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 15:55:57,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 15:55:57,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 15:55:57,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 15:55:57,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 15:55:57,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 15:55:57,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 15:55:57,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 15:55:57,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 15:55:57,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 15:55:57,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 15:55:57,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 15:55:57,042 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 15:55:57,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 15:55:57,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 15:55:57,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 15:55:57,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 15:55:57,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 15:55:57,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 15:55:57,044 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 15:55:57,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 15:55:57,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 15:55:57,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 15:55:57,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 15:55:57,336 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 15:55:57,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-07-08 15:55:57,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da861b5b/6ff0e49de17041ef94872d6e2aea1cde/FLAG3c73c6108 [2020-07-08 15:55:57,894 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 15:55:57,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-07-08 15:55:57,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da861b5b/6ff0e49de17041ef94872d6e2aea1cde/FLAG3c73c6108 [2020-07-08 15:55:58,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da861b5b/6ff0e49de17041ef94872d6e2aea1cde [2020-07-08 15:55:58,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 15:55:58,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 15:55:58,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 15:55:58,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 15:55:58,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 15:55:58,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afab1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58, skipping insertion in model container [2020-07-08 15:55:58,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 15:55:58,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 15:55:58,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 15:55:58,509 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 15:55:58,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 15:55:58,540 INFO L208 MainTranslator]: Completed translation [2020-07-08 15:55:58,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58 WrapperNode [2020-07-08 15:55:58,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 15:55:58,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 15:55:58,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 15:55:58,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 15:55:58,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... [2020-07-08 15:55:58,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 15:55:58,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 15:55:58,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 15:55:58,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 15:55:58,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 15:55:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 15:55:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 15:55:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-08 15:55:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-08 15:55:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 15:55:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 15:55:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 15:55:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-08 15:55:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-08 15:55:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 15:55:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 15:55:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 15:55:59,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 15:55:59,031 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 15:55:59,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 03:55:59 BoogieIcfgContainer [2020-07-08 15:55:59,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 15:55:59,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 15:55:59,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 15:55:59,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 15:55:59,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 03:55:58" (1/3) ... [2020-07-08 15:55:59,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 03:55:59, skipping insertion in model container [2020-07-08 15:55:59,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:55:58" (2/3) ... [2020-07-08 15:55:59,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 03:55:59, skipping insertion in model container [2020-07-08 15:55:59,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 03:55:59" (3/3) ... [2020-07-08 15:55:59,046 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-07-08 15:55:59,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 15:55:59,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 15:55:59,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 15:55:59,147 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 15:55:59,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 15:55:59,147 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 15:55:59,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 15:55:59,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 15:55:59,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 15:55:59,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 15:55:59,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 15:55:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-08 15:55:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-08 15:55:59,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 15:55:59,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 15:55:59,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 15:55:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 15:55:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-07-08 15:55:59,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 15:55:59,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987270623] [2020-07-08 15:55:59,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 15:55:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:55:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:55:59,420 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-08 15:55:59,421 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-08 15:55:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:55:59,495 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:55:59,496 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,498 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,499 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,501 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 2 main_~x~0)} #63#return; {49#false} is VALID [2020-07-08 15:55:59,502 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-08 15:55:59,503 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-08 15:55:59,503 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-08 15:55:59,504 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret5 := main(); {48#true} is VALID [2020-07-08 15:55:59,505 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} ~x~0 := 2; {52#(<= 2 main_~x~0)} is VALID [2020-07-08 15:55:59,506 INFO L263 TraceCheckUtils]: 5: Hoare triple {52#(<= 2 main_~x~0)} call #t~ret4 := fibo1(~x~0); {48#true} is VALID [2020-07-08 15:55:59,507 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:55:59,508 INFO L280 TraceCheckUtils]: 7: Hoare triple {58#(= fibo1_~n |fibo1_#in~n|)} assume ~n < 1; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,510 INFO L280 TraceCheckUtils]: 8: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,511 INFO L280 TraceCheckUtils]: 9: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-08 15:55:59,513 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 2 main_~x~0)} #63#return; {49#false} is VALID [2020-07-08 15:55:59,514 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {49#false} is VALID [2020-07-08 15:55:59,514 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#false} ~result~0 := #t~ret4; {49#false} is VALID [2020-07-08 15:55:59,515 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#false} havoc #t~ret4; {49#false} is VALID [2020-07-08 15:55:59,515 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} assume 1 != ~result~0; {49#false} is VALID [2020-07-08 15:55:59,516 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-08 15:55:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 15:55:59,519 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 15:55:59,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987270623] [2020-07-08 15:55:59,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 15:55:59,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 15:55:59,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460476122] [2020-07-08 15:55:59,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-08 15:55:59,534 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 15:55:59,539 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 15:55:59,574 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:55:59,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 15:55:59,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 15:55:59,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 15:55:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 15:55:59,587 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-07-08 15:55:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:55:59,972 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-07-08 15:55:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-08 15:55:59,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-08 15:55:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 15:55:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 15:55:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-08 15:55:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 15:55:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-08 15:55:59,994 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 67 transitions. [2020-07-08 15:56:00,108 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:56:00,123 INFO L225 Difference]: With dead ends: 58 [2020-07-08 15:56:00,124 INFO L226 Difference]: Without dead ends: 42 [2020-07-08 15:56:00,128 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 [2020-07-08 15:56:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-08 15:56:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-08 15:56:00,207 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 15:56:00,208 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-08 15:56:00,208 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-08 15:56:00,209 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-08 15:56:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:56:00,217 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-08 15:56:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-08 15:56:00,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 15:56:00,219 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 15:56:00,219 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-08 15:56:00,220 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-08 15:56:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:56:00,227 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-08 15:56:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-08 15:56:00,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 15:56:00,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 15:56:00,228 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 15:56:00,229 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 15:56:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-08 15:56:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-08 15:56:00,236 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-07-08 15:56:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 15:56:00,237 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-08 15:56:00,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 15:56:00,237 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-08 15:56:00,301 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:56:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-08 15:56:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-08 15:56:00,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 15:56:00,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 15:56:00,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 15:56:00,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 15:56:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 15:56:00,306 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-07-08 15:56:00,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 15:56:00,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036373504] [2020-07-08 15:56:00,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 15:56:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:56:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:56:00,391 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-08 15:56:00,391 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-08 15:56:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 15:56:00,447 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:56:00,449 INFO L280 TraceCheckUtils]: 1: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume !(~n < 1); {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:56:00,450 INFO L280 TraceCheckUtils]: 2: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume 1 == ~n; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,451 INFO L280 TraceCheckUtils]: 3: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,452 INFO L280 TraceCheckUtils]: 4: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,454 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 2 main_~x~0)} #63#return; {349#false} is VALID [2020-07-08 15:56:00,455 INFO L263 TraceCheckUtils]: 0: Hoare triple {348#true} call ULTIMATE.init(); {348#true} is VALID [2020-07-08 15:56:00,457 INFO L280 TraceCheckUtils]: 1: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-08 15:56:00,458 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-08 15:56:00,459 INFO L263 TraceCheckUtils]: 3: Hoare triple {348#true} call #t~ret5 := main(); {348#true} is VALID [2020-07-08 15:56:00,461 INFO L280 TraceCheckUtils]: 4: Hoare triple {348#true} ~x~0 := 2; {352#(<= 2 main_~x~0)} is VALID [2020-07-08 15:56:00,462 INFO L263 TraceCheckUtils]: 5: Hoare triple {352#(<= 2 main_~x~0)} call #t~ret4 := fibo1(~x~0); {348#true} is VALID [2020-07-08 15:56:00,462 INFO L280 TraceCheckUtils]: 6: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:56:00,463 INFO L280 TraceCheckUtils]: 7: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume !(~n < 1); {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-08 15:56:00,464 INFO L280 TraceCheckUtils]: 8: Hoare triple {359#(= fibo1_~n |fibo1_#in~n|)} assume 1 == ~n; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,465 INFO L280 TraceCheckUtils]: 9: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,465 INFO L280 TraceCheckUtils]: 10: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-08 15:56:00,467 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 2 main_~x~0)} #63#return; {349#false} is VALID [2020-07-08 15:56:00,467 INFO L280 TraceCheckUtils]: 12: Hoare triple {349#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {349#false} is VALID [2020-07-08 15:56:00,467 INFO L280 TraceCheckUtils]: 13: Hoare triple {349#false} ~result~0 := #t~ret4; {349#false} is VALID [2020-07-08 15:56:00,468 INFO L280 TraceCheckUtils]: 14: Hoare triple {349#false} havoc #t~ret4; {349#false} is VALID [2020-07-08 15:56:00,468 INFO L280 TraceCheckUtils]: 15: Hoare triple {349#false} assume 1 != ~result~0; {349#false} is VALID [2020-07-08 15:56:00,468 INFO L280 TraceCheckUtils]: 16: Hoare triple {349#false} assume !false; {349#false} is VALID [2020-07-08 15:56:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 15:56:00,470 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 15:56:00,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036373504] [2020-07-08 15:56:00,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 15:56:00,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 15:56:00,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022910318] [2020-07-08 15:56:00,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-08 15:56:00,474 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 15:56:00,474 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 15:56:00,494 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:56:00,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 15:56:00,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 15:56:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 15:56:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 15:56:00,495 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-07-08 15:56:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:56:00,775 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-08 15:56:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-08 15:56:00,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-08 15:56:00,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 15:56:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 15:56:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-08 15:56:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 15:56:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-08 15:56:00,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 55 transitions. [2020-07-08 15:56:00,852 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:56:00,856 INFO L225 Difference]: With dead ends: 50 [2020-07-08 15:56:00,856 INFO L226 Difference]: Without dead ends: 44 [2020-07-08 15:56:00,858 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 [2020-07-08 15:56:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-08 15:56:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-07-08 15:56:00,914 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 15:56:00,914 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 42 states. [2020-07-08 15:56:00,914 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 42 states. [2020-07-08 15:56:00,915 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 42 states. [2020-07-08 15:56:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:56:00,921 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-08 15:56:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-08 15:56:00,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 15:56:00,922 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 15:56:00,923 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 44 states. [2020-07-08 15:56:00,923 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 44 states. [2020-07-08 15:56:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 15:56:00,929 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-08 15:56:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-08 15:56:00,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 15:56:00,931 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 15:56:00,931 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 15:56:00,931 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 15:56:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-08 15:56:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-08 15:56:00,936 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-07-08 15:56:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 15:56:00,936 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-08 15:56:00,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 15:56:00,937 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-08 15:56:01,002 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 15:56:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-08 15:56:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-08 15:56:01,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 15:56:01,005 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] [2020-07-08 15:56:01,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 15:56:01,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 15:56:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 15:56:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-07-08 15:56:01,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 15:56:01,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128120196] [2020-07-08 15:56:01,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 15:56:01,039 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) [2020-07-08 15:56:01,046 INFO L168 Benchmark]: Toolchain (without parser) took 2775.20 ms. Allocated memory was 136.8 MB in the beginning and 230.7 MB in the end (delta: 93.8 MB). Free memory was 101.7 MB in the beginning and 81.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,047 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.72 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,049 INFO L168 Benchmark]: Boogie Preprocessor took 113.58 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,050 INFO L168 Benchmark]: RCFGBuilder took 382.28 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 158.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,051 INFO L168 Benchmark]: TraceAbstraction took 2003.84 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 157.4 MB in the beginning and 81.7 MB in the end (delta: 75.6 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2020-07-08 15:56:01,055 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 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.72 ms. Allocated memory is still 136.8 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.58 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.28 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 158.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2003.84 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 157.4 MB in the beginning and 81.7 MB in the end (delta: 75.6 MB). Peak memory consumption was 105.5 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...