/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_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 18:37:46,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 18:37:46,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 18:37:46,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 18:37:46,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 18:37:46,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 18:37:46,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 18:37:46,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 18:37:46,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 18:37:46,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 18:37:46,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 18:37:46,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 18:37:46,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 18:37:46,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 18:37:46,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 18:37:46,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 18:37:46,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 18:37:46,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 18:37:46,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 18:37:46,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 18:37:46,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 18:37:46,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 18:37:46,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 18:37:46,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 18:37:46,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 18:37:46,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 18:37:46,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 18:37:46,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 18:37:46,407 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 18:37:46,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 18:37:46,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 18:37:46,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 18:37:46,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 18:37:46,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 18:37:46,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 18:37:46,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 18:37:46,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 18:37:46,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 18:37:46,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 18:37:46,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 18:37:46,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 18:37:46,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 18:37:46,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 18:37:46,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 18:37:46,420 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 18:37:46,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 18:37:46,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 18:37:46,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 18:37:46,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 18:37:46,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 18:37:46,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 18:37:46,421 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 18:37:46,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 18:37:46,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 18:37:46,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 18:37:46,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 18:37:46,755 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 18:37:46,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-07-10 18:37:46,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80bb0023/3d73770681f24c33b8dea6a585546706/FLAGc800052c4 [2020-07-10 18:37:47,261 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 18:37:47,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-07-10 18:37:47,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80bb0023/3d73770681f24c33b8dea6a585546706/FLAGc800052c4 [2020-07-10 18:37:47,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80bb0023/3d73770681f24c33b8dea6a585546706 [2020-07-10 18:37:47,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 18:37:47,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 18:37:47,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:47,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 18:37:47,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 18:37:47,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:47" (1/1) ... [2020-07-10 18:37:47,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6f94b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:47, skipping insertion in model container [2020-07-10 18:37:47,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:37:47" (1/1) ... [2020-07-10 18:37:47,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 18:37:47,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 18:37:47,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:47,972 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 18:37:47,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:37:48,010 INFO L208 MainTranslator]: Completed translation [2020-07-10 18:37:48,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48 WrapperNode [2020-07-10 18:37:48,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 18:37:48,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 18:37:48,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 18:37:48,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 18:37:48,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (1/1) ... [2020-07-10 18:37:48,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 18:37:48,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 18:37:48,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 18:37:48,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 18:37:48,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (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 18:37:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 18:37:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 18:37:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-10 18:37:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-10 18:37:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 18:37:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 18:37:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 18:37:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-10 18:37:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-10 18:37:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 18:37:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 18:37:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 18:37:48,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 18:37:48,606 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 18:37:48,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:48 BoogieIcfgContainer [2020-07-10 18:37:48,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 18:37:48,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 18:37:48,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 18:37:48,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 18:37:48,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 06:37:47" (1/3) ... [2020-07-10 18:37:48,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20343eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:48, skipping insertion in model container [2020-07-10 18:37:48,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:37:48" (2/3) ... [2020-07-10 18:37:48,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20343eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:37:48, skipping insertion in model container [2020-07-10 18:37:48,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:37:48" (3/3) ... [2020-07-10 18:37:48,619 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-07-10 18:37:48,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 18:37:48,637 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 18:37:48,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 18:37:48,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 18:37:48,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 18:37:48,672 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 18:37:48,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 18:37:48,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 18:37:48,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 18:37:48,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 18:37:48,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 18:37:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-10 18:37:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-10 18:37:48,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:48,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:37:48,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-07-10 18:37:48,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:48,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828614214] [2020-07-10 18:37:48,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:48,900 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:48,900 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:48,963 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:48,965 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 18:37:48,971 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:48,972 INFO L280 TraceCheckUtils]: 3: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:48,974 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 8 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:48,975 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-10 18:37:48,975 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 18:37:48,976 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #59#return; {48#true} is VALID [2020-07-10 18:37:48,976 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret5 := main(); {48#true} is VALID [2020-07-10 18:37:48,983 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} ~x~0 := 8; {52#(<= 8 main_~x~0)} is VALID [2020-07-10 18:37:48,984 INFO L263 TraceCheckUtils]: 5: Hoare triple {52#(<= 8 main_~x~0)} call #t~ret4 := fibo1(~x~0); {48#true} is VALID [2020-07-10 18:37:48,985 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} ~n := #in~n; {58#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:48,987 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 18:37:48,988 INFO L280 TraceCheckUtils]: 8: Hoare triple {59#(<= |fibo1_#in~n| 0)} #res := 0; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:48,990 INFO L280 TraceCheckUtils]: 9: Hoare triple {59#(<= |fibo1_#in~n| 0)} assume true; {59#(<= |fibo1_#in~n| 0)} is VALID [2020-07-10 18:37:48,992 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {59#(<= |fibo1_#in~n| 0)} {52#(<= 8 main_~x~0)} #63#return; {49#false} is VALID [2020-07-10 18:37:48,993 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {49#false} is VALID [2020-07-10 18:37:48,993 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#false} ~result~0 := #t~ret4; {49#false} is VALID [2020-07-10 18:37:48,993 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#false} havoc #t~ret4; {49#false} is VALID [2020-07-10 18:37:48,994 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} assume 21 != ~result~0; {49#false} is VALID [2020-07-10 18:37:48,994 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-10 18:37:48,996 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 18:37:48,997 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:48,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828614214] [2020-07-10 18:37:49,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:49,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:49,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473225997] [2020-07-10 18:37:49,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:49,010 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:49,013 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:49,059 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 18:37:49,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:49,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:49,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:49,072 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-07-10 18:37:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:49,472 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-07-10 18:37:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:49,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-10 18:37:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2020-07-10 18:37:49,492 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 67 transitions. [2020-07-10 18:37:49,623 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 18:37:49,649 INFO L225 Difference]: With dead ends: 58 [2020-07-10 18:37:49,650 INFO L226 Difference]: Without dead ends: 42 [2020-07-10 18:37:49,661 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 18:37:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-10 18:37:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-10 18:37:49,770 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:49,770 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:49,771 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:49,771 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:49,785 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:49,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:49,787 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:49,787 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:49,788 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-10 18:37:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:49,794 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-10 18:37:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:49,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:49,796 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:49,796 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:49,796 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:49,803 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-07-10 18:37:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:49,803 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:49,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:49,804 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:49,874 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 18:37:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 18:37:49,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:49,876 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 18:37:49,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 18:37:49,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-07-10 18:37:49,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:49,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928622066] [2020-07-10 18:37:49,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:49,915 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:49,915 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 18:37:49,949 INFO L280 TraceCheckUtils]: 0: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:49,950 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 18:37:49,951 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 18:37:49,952 INFO L280 TraceCheckUtils]: 3: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:49,953 INFO L280 TraceCheckUtils]: 4: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:49,955 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 8 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:49,956 INFO L263 TraceCheckUtils]: 0: Hoare triple {348#true} call ULTIMATE.init(); {348#true} is VALID [2020-07-10 18:37:49,956 INFO L280 TraceCheckUtils]: 1: Hoare triple {348#true} assume true; {348#true} is VALID [2020-07-10 18:37:49,957 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {348#true} {348#true} #59#return; {348#true} is VALID [2020-07-10 18:37:49,957 INFO L263 TraceCheckUtils]: 3: Hoare triple {348#true} call #t~ret5 := main(); {348#true} is VALID [2020-07-10 18:37:49,958 INFO L280 TraceCheckUtils]: 4: Hoare triple {348#true} ~x~0 := 8; {352#(<= 8 main_~x~0)} is VALID [2020-07-10 18:37:49,958 INFO L263 TraceCheckUtils]: 5: Hoare triple {352#(<= 8 main_~x~0)} call #t~ret4 := fibo1(~x~0); {348#true} is VALID [2020-07-10 18:37:49,959 INFO L280 TraceCheckUtils]: 6: Hoare triple {348#true} ~n := #in~n; {359#(= fibo1_~n |fibo1_#in~n|)} is VALID [2020-07-10 18:37:49,960 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 18:37:49,961 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 18:37:49,962 INFO L280 TraceCheckUtils]: 9: Hoare triple {360#(<= |fibo1_#in~n| 1)} #res := 1; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:49,962 INFO L280 TraceCheckUtils]: 10: Hoare triple {360#(<= |fibo1_#in~n| 1)} assume true; {360#(<= |fibo1_#in~n| 1)} is VALID [2020-07-10 18:37:49,964 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {360#(<= |fibo1_#in~n| 1)} {352#(<= 8 main_~x~0)} #63#return; {349#false} is VALID [2020-07-10 18:37:49,964 INFO L280 TraceCheckUtils]: 12: Hoare triple {349#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {349#false} is VALID [2020-07-10 18:37:49,965 INFO L280 TraceCheckUtils]: 13: Hoare triple {349#false} ~result~0 := #t~ret4; {349#false} is VALID [2020-07-10 18:37:49,965 INFO L280 TraceCheckUtils]: 14: Hoare triple {349#false} havoc #t~ret4; {349#false} is VALID [2020-07-10 18:37:49,965 INFO L280 TraceCheckUtils]: 15: Hoare triple {349#false} assume 21 != ~result~0; {349#false} is VALID [2020-07-10 18:37:49,966 INFO L280 TraceCheckUtils]: 16: Hoare triple {349#false} assume !false; {349#false} is VALID [2020-07-10 18:37:49,967 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 18:37:49,967 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 18:37:49,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928622066] [2020-07-10 18:37:49,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 18:37:49,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 18:37:49,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432589211] [2020-07-10 18:37:49,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:49,970 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 18:37:49,970 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 18:37:49,992 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 18:37:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 18:37:49,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 18:37:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 18:37:49,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-10 18:37:49,993 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-07-10 18:37:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:50,246 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-10 18:37:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-10 18:37:50,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 18:37:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 18:37:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 18:37:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2020-07-10 18:37:50,254 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 55 transitions. [2020-07-10 18:37:50,323 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 18:37:50,327 INFO L225 Difference]: With dead ends: 50 [2020-07-10 18:37:50,327 INFO L226 Difference]: Without dead ends: 44 [2020-07-10 18:37:50,329 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 18:37:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-10 18:37:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-07-10 18:37:50,391 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 18:37:50,391 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:50,391 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:50,392 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 42 states. [2020-07-10 18:37:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:50,400 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:50,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:50,406 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:50,406 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:50,406 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 44 states. [2020-07-10 18:37:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 18:37:50,414 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-07-10 18:37:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-10 18:37:50,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 18:37:50,416 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 18:37:50,416 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 18:37:50,416 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 18:37:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-10 18:37:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-07-10 18:37:50,423 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-07-10 18:37:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 18:37:50,423 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-07-10 18:37:50,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 18:37:50,424 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2020-07-10 18:37:50,503 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 18:37:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-10 18:37:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 18:37:50,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:37:50,505 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 18:37:50,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 18:37:50,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:37:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:37:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-07-10 18:37:50,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:37:50,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821951485] [2020-07-10 18:37:50,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:37:50,540 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 18:37:50,546 INFO L168 Benchmark]: Toolchain (without parser) took 2873.12 ms. Allocated memory was 134.7 MB in the beginning and 223.9 MB in the end (delta: 89.1 MB). Free memory was 100.0 MB in the beginning and 79.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,548 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.85 ms. Allocated memory is still 134.7 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,550 INFO L168 Benchmark]: Boogie Preprocessor took 113.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 177.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,550 INFO L168 Benchmark]: RCFGBuilder took 485.64 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 155.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,551 INFO L168 Benchmark]: TraceAbstraction took 1931.42 ms. Allocated memory was 198.2 MB in the beginning and 223.9 MB in the end (delta: 25.7 MB). Free memory was 155.1 MB in the beginning and 81.2 MB in the end (delta: 73.9 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-07-10 18:37:50,556 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 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.85 ms. Allocated memory is still 134.7 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 177.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.64 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 155.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1931.42 ms. Allocated memory was 198.2 MB in the beginning and 223.9 MB in the end (delta: 25.7 MB). Free memory was 155.1 MB in the beginning and 81.2 MB in the end (delta: 73.9 MB). Peak memory consumption was 99.6 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...