/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_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:14:20,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:14:20,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:14:20,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:14:20,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:14:20,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:14:20,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:14:20,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:14:20,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:14:20,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:14:20,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:14:20,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:14:20,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:14:20,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:14:20,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:14:20,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:14:20,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:14:20,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:14:20,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:14:20,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:14:20,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:14:20,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:14:20,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:14:20,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:14:20,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:14:20,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:14:20,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:14:20,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:14:20,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:14:20,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:14:20,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:14:20,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:14:20,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:14:20,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:14:20,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:14:20,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:14:20,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:14:20,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:14:20,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:14:20,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:14:20,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:14:20,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:14:20,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:14:20,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:14:20,865 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:14:20,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:14:20,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:14:20,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:14:20,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:14:20,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:14:20,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:14:20,867 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:14:21,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:14:21,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:14:21,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:14:21,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:14:21,210 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:14:21,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-07-18 00:14:21,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b678018/7735b3981ccd4cdba53d6ac9b52580ec/FLAG45e7f92d2 [2020-07-18 00:14:21,683 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:14:21,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-07-18 00:14:21,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b678018/7735b3981ccd4cdba53d6ac9b52580ec/FLAG45e7f92d2 [2020-07-18 00:14:22,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b678018/7735b3981ccd4cdba53d6ac9b52580ec [2020-07-18 00:14:22,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:14:22,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:14:22,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:22,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:14:22,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:14:22,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,133 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 18.07 12:14:22, skipping insertion in model container [2020-07-18 00:14:22,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:14:22,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:14:22,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:22,321 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:14:22,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:14:22,351 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:14:22,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22 WrapperNode [2020-07-18 00:14:22,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:14:22,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:14:22,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:14:22,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:14:22,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... [2020-07-18 00:14:22,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:14:22,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:14:22,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:14:22,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:14:22,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:14:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:14:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:14:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-07-18 00:14:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:14:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:14:22,773 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:14:22,773 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:14:22,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:22 BoogieIcfgContainer [2020-07-18 00:14:22,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:14:22,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:14:22,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:14:22,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:14:22,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:14:22" (1/3) ... [2020-07-18 00:14:22,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330ff7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:22, skipping insertion in model container [2020-07-18 00:14:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:14:22" (2/3) ... [2020-07-18 00:14:22,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330ff7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:14:22, skipping insertion in model container [2020-07-18 00:14:22,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:14:22" (3/3) ... [2020-07-18 00:14:22,785 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-07-18 00:14:22,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:14:22,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:14:22,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:14:22,849 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:14:22,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:14:22,850 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:14:22,850 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:14:22,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:14:22,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:14:22,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:14:22,851 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:14:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-18 00:14:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:14:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:14:22,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:14:22,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:14:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:14:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-07-18 00:14:22,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:14:22,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069947185] [2020-07-18 00:14:22,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:14:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:23,093 INFO L280 TraceCheckUtils]: 0: Hoare triple {34#true} assume true; {34#true} is VALID [2020-07-18 00:14:23,094 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {34#true} {34#true} #40#return; {34#true} is VALID [2020-07-18 00:14:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:14:23,144 INFO L280 TraceCheckUtils]: 0: Hoare triple {34#true} ~n := #in~n; {44#(= fibo_~n |fibo_#in~n|)} is VALID [2020-07-18 00:14:23,145 INFO L280 TraceCheckUtils]: 1: Hoare triple {44#(= fibo_~n |fibo_#in~n|)} assume ~n < 1; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,146 INFO L280 TraceCheckUtils]: 2: Hoare triple {45#(<= |fibo_#in~n| 0)} #res := 0; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,147 INFO L280 TraceCheckUtils]: 3: Hoare triple {45#(<= |fibo_#in~n| 0)} assume true; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,149 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {45#(<= |fibo_#in~n| 0)} {38#(<= 7 main_~x~0)} #44#return; {35#false} is VALID [2020-07-18 00:14:23,150 INFO L263 TraceCheckUtils]: 0: Hoare triple {34#true} call ULTIMATE.init(); {34#true} is VALID [2020-07-18 00:14:23,150 INFO L280 TraceCheckUtils]: 1: Hoare triple {34#true} assume true; {34#true} is VALID [2020-07-18 00:14:23,151 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {34#true} {34#true} #40#return; {34#true} is VALID [2020-07-18 00:14:23,151 INFO L263 TraceCheckUtils]: 3: Hoare triple {34#true} call #t~ret3 := main(); {34#true} is VALID [2020-07-18 00:14:23,152 INFO L280 TraceCheckUtils]: 4: Hoare triple {34#true} ~x~0 := 7; {38#(<= 7 main_~x~0)} is VALID [2020-07-18 00:14:23,153 INFO L263 TraceCheckUtils]: 5: Hoare triple {38#(<= 7 main_~x~0)} call #t~ret2 := fibo(~x~0); {34#true} is VALID [2020-07-18 00:14:23,154 INFO L280 TraceCheckUtils]: 6: Hoare triple {34#true} ~n := #in~n; {44#(= fibo_~n |fibo_#in~n|)} is VALID [2020-07-18 00:14:23,155 INFO L280 TraceCheckUtils]: 7: Hoare triple {44#(= fibo_~n |fibo_#in~n|)} assume ~n < 1; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,156 INFO L280 TraceCheckUtils]: 8: Hoare triple {45#(<= |fibo_#in~n| 0)} #res := 0; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,157 INFO L280 TraceCheckUtils]: 9: Hoare triple {45#(<= |fibo_#in~n| 0)} assume true; {45#(<= |fibo_#in~n| 0)} is VALID [2020-07-18 00:14:23,159 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {45#(<= |fibo_#in~n| 0)} {38#(<= 7 main_~x~0)} #44#return; {35#false} is VALID [2020-07-18 00:14:23,159 INFO L280 TraceCheckUtils]: 11: Hoare triple {35#false} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {35#false} is VALID [2020-07-18 00:14:23,160 INFO L280 TraceCheckUtils]: 12: Hoare triple {35#false} ~result~0 := #t~ret2; {35#false} is VALID [2020-07-18 00:14:23,160 INFO L280 TraceCheckUtils]: 13: Hoare triple {35#false} havoc #t~ret2; {35#false} is VALID [2020-07-18 00:14:23,161 INFO L280 TraceCheckUtils]: 14: Hoare triple {35#false} assume 13 == ~result~0; {35#false} is VALID [2020-07-18 00:14:23,161 INFO L280 TraceCheckUtils]: 15: Hoare triple {35#false} assume !false; {35#false} is VALID [2020-07-18 00:14:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:14:23,309 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:14:23,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069947185] [2020-07-18 00:14:23,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:14:23,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 00:14:23,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409687111] [2020-07-18 00:14:23,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-07-18 00:14:23,324 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:14:23,328 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 00:14:23,336 WARN L140 InductivityCheck]: Transition 49#(and (<= |fibo_#in~n| 0) (= 13 main_~result~0)) ( _ , assume !false; , 35#false ) not inductive [2020-07-18 00:14:23,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:14:23,337 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inductivity failed at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.checkInductivity(InductivityCheck.java:103) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.(InductivityCheck.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.constructInterpolantAutomaton(BasicCegarLoop.java:583) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:14:23,343 INFO L168 Benchmark]: Toolchain (without parser) took 1219.03 ms. Allocated memory was 149.9 MB in the beginning and 203.4 MB in the end (delta: 53.5 MB). Free memory was 107.9 MB in the beginning and 127.1 MB in the end (delta: -19.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,344 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 149.9 MB. Free memory was 126.5 MB in the beginning and 126.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.20 ms. Allocated memory is still 149.9 MB. Free memory was 107.4 MB in the beginning and 98.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,346 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 149.9 MB. Free memory was 98.1 MB in the beginning and 96.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,347 INFO L168 Benchmark]: RCFGBuilder took 393.78 ms. Allocated memory was 149.9 MB in the beginning and 203.4 MB in the end (delta: 53.5 MB). Free memory was 96.7 MB in the beginning and 166.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,348 INFO L168 Benchmark]: TraceAbstraction took 561.20 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 127.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:14:23,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 149.9 MB. Free memory was 126.5 MB in the beginning and 126.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.20 ms. Allocated memory is still 149.9 MB. Free memory was 107.4 MB in the beginning and 98.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 149.9 MB. Free memory was 98.1 MB in the beginning and 96.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.78 ms. Allocated memory was 149.9 MB in the beginning and 203.4 MB in the end (delta: 53.5 MB). Free memory was 96.7 MB in the beginning and 166.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 561.20 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 127.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inductivity failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inductivity failed: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.InductivityCheck.evaluateResult(InductivityCheck.java:142) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...