java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:47:41,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:47:41,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:47:41,104 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:47:41,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:47:41,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:47:41,107 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:47:41,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:47:41,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:47:41,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:47:41,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:47:41,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:47:41,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:47:41,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:47:41,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:47:41,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:47:41,121 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:47:41,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:47:41,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:47:41,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:47:41,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:47:41,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:47:41,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:47:41,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:47:41,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:47:41,152 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:47:41,153 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:47:41,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:47:41,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:47:41,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:47:41,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:47:41,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 16:47:41,162 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 16:47:41,162 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 16:47:41,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 16:47:41,166 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 16:47:41,167 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 16:47:41,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:47:41,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:47:41,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:47:41,199 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:47:41,199 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:47:41,199 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:47:41,199 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:47:41,200 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:47:41,200 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:47:41,200 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:47:41,200 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:47:41,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:47:41,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:47:41,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:47:41,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:47:41,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:47:41,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:47:41,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:47:41,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:47:41,202 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:47:41,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:47:41,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:47:41,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:47:41,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:47:41,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:47:41,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:47:41,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:47:41,204 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:47:41,204 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:47:41,204 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:47:41,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:47:41,205 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:47:41,205 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:47:41,205 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:47:41,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:47:41,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:47:41,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:47:41,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:47:41,295 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:47:41,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-07 16:47:41,374 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11880da1a/0cc8e3aeaf974cdc8509ddbbb4c4c471/FLAG535467b52 [2018-11-07 16:47:41,793 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:47:41,794 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-07 16:47:41,801 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11880da1a/0cc8e3aeaf974cdc8509ddbbb4c4c471/FLAG535467b52 [2018-11-07 16:47:41,816 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11880da1a/0cc8e3aeaf974cdc8509ddbbb4c4c471 [2018-11-07 16:47:41,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:47:41,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:47:41,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:47:41,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:47:41,834 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:47:41,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:41" (1/1) ... [2018-11-07 16:47:41,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7beed0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:41, skipping insertion in model container [2018-11-07 16:47:41,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:41" (1/1) ... [2018-11-07 16:47:41,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:47:41,880 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:47:42,086 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:47:42,090 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:47:42,113 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:47:42,126 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:47:42,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42 WrapperNode [2018-11-07 16:47:42,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:47:42,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:47:42,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:47:42,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:47:42,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:47:42,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:47:42,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:47:42,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:47:42,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (1/1) ... [2018-11-07 16:47:42,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:47:42,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:47:42,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:47:42,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:47:42,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (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 [2018-11-07 16:47:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:47:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:47:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:47:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:47:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:47:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:47:42,637 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:47:42,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:42 BoogieIcfgContainer [2018-11-07 16:47:42,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:47:42,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:47:42,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:47:42,642 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:47:42,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:41" (1/3) ... [2018-11-07 16:47:42,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e59659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:42, skipping insertion in model container [2018-11-07 16:47:42,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:42" (2/3) ... [2018-11-07 16:47:42,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e59659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:42, skipping insertion in model container [2018-11-07 16:47:42,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:42" (3/3) ... [2018-11-07 16:47:42,646 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-07 16:47:42,657 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:47:42,666 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:47:42,682 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:47:42,715 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:47:42,715 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:47:42,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:47:42,716 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:47:42,716 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:47:42,716 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:47:42,716 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:47:42,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:47:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-07 16:47:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 16:47:42,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:47:42,743 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:47:42,745 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:47:42,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:47:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2018-11-07 16:47:42,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:47:42,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:42,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:42,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:42,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:47:42,847 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:47:42,847 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:47:42,847 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:47:42,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:42,870 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:47:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:42,916 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 16:47:42,918 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:47:42,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:47:42,919 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:47:42,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:42,931 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:47:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:42,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:47:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:47:43,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:47:43,788 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-07 16:47:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:47:47,967 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:47:47,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2018-11-07 16:47:47,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:47:47,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 16:47:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 16:47:47,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2018-11-07 16:47:47,987 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2018-11-07 16:47:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:47:48,403 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-11-07 16:47:48,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 16:47:48,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-07 16:47:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:47:48,418 INFO L225 Difference]: With dead ends: 41 [2018-11-07 16:47:48,419 INFO L226 Difference]: Without dead ends: 18 [2018-11-07 16:47:48,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=36, Invalid=123, Unknown=1, NotChecked=22, Total=182 [2018-11-07 16:47:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-07 16:47:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-07 16:47:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-07 16:47:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-07 16:47:48,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-11-07 16:47:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:47:48,471 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-07 16:47:48,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 16:47:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-07 16:47:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 16:47:48,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:47:48,473 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:47:48,473 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:47:48,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:47:48,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2018-11-07 16:47:48,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:47:48,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:48,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:48,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:48,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:47:48,490 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:47:48,491 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:47:48,491 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:47:48,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:48,512 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:47:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:48,574 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-07 16:47:48,579 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2018-11-07 16:47:48,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:47:48,636 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:47:49,003 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 16:47:49,004 INFO L272 AbstractInterpreter]: Visited 17 different actions 37 times. Merged at 4 different actions 20 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-07 16:47:49,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:47:49,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 16:47:49,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:47:49,024 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:47:49,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:49,040 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:47:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:49,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:47:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:47:49,612 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:47:49,706 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2018-11-07 16:47:49,841 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) is different from true [2018-11-07 16:47:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-07 16:47:51,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:47:51,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-11-07 16:47:51,111 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:47:51,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 16:47:51,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 16:47:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=143, Unknown=3, NotChecked=50, Total=240 [2018-11-07 16:47:51,113 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 16 states. [2018-11-07 16:47:51,475 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (= 6 c_main_~main__i~0) (= c_main_~main__sum~0 15) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-07 16:47:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:47:52,357 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-07 16:47:52,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 16:47:52,358 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2018-11-07 16:47:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:47:52,359 INFO L225 Difference]: With dead ends: 22 [2018-11-07 16:47:52,359 INFO L226 Difference]: Without dead ends: 19 [2018-11-07 16:47:52,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=78, Invalid=272, Unknown=4, NotChecked=108, Total=462 [2018-11-07 16:47:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-07 16:47:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-07 16:47:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-07 16:47:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-07 16:47:52,366 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-07 16:47:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:47:52,366 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-07 16:47:52,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 16:47:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-07 16:47:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 16:47:52,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:47:52,368 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:47:52,368 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:47:52,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:47:52,369 INFO L82 PathProgramCache]: Analyzing trace with hash -417206074, now seen corresponding path program 2 times [2018-11-07 16:47:52,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:47:52,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:52,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:47:52,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:52,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:47:52,384 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:47:52,384 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:47:52,385 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:47:52,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 16:47:52,402 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:47:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:52,435 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 16:47:52,436 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:47:52,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:47:52,436 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:47:52,447 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 16:47:52,447 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 16:47:52,466 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 16:47:52,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 16:47:52,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:47:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:47:52,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:47:54,757 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-07 16:47:54,772 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 2))) (or (= (+ (* 2 c_main_~main__sum~0) (* 6 c_main_~main__i~0) 6) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-07 16:47:54,790 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) is different from true [2018-11-07 16:47:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-07 16:47:55,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:47:55,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2018-11-07 16:47:55,062 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:47:55,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 16:47:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 16:47:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=150, Unknown=4, NotChecked=78, Total=272 [2018-11-07 16:47:55,063 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 17 states. [2018-11-07 16:47:55,138 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= c_main_~main__sum~0 1) (= 2 c_main_~main__i~0) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-07 16:47:55,330 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= 6 c_main_~main__i~0) (= c_main_~main__sum~0 15) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-07 16:47:55,467 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-07 16:47:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:47:55,652 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-07 16:47:55,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 16:47:55,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-11-07 16:47:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:47:55,654 INFO L225 Difference]: With dead ends: 27 [2018-11-07 16:47:55,654 INFO L226 Difference]: Without dead ends: 22 [2018-11-07 16:47:55,655 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=80, Invalid=317, Unknown=7, NotChecked=246, Total=650 [2018-11-07 16:47:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-07 16:47:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-07 16:47:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-07 16:47:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-07 16:47:55,661 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2018-11-07 16:47:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:47:55,662 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-07 16:47:55,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 16:47:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-07 16:47:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 16:47:55,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:47:55,664 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:47:55,664 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:47:55,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:47:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 587183296, now seen corresponding path program 3 times [2018-11-07 16:47:55,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:47:55,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:55,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 16:47:55,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:47:55,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:47:55,680 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:47:55,680 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:47:55,680 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:47:55,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 16:47:55,695 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:47:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:47:55,741 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 16:47:55,741 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:47:55,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:47:55,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:47:55,752 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-07 16:47:55,752 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-07 16:47:55,837 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-07 16:47:55,837 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 16:47:55,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:47:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:47:56,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:47:58,524 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) is different from true [2018-11-07 16:47:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 16:47:59,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:47:59,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2018-11-07 16:47:59,477 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:47:59,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 16:47:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 16:47:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=269, Unknown=6, NotChecked=34, Total=380 [2018-11-07 16:47:59,478 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 20 states. [2018-11-07 16:47:59,704 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-11-07 16:48:00,338 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-07 16:48:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:48:00,451 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-07 16:48:00,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 16:48:00,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2018-11-07 16:48:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:48:00,452 INFO L225 Difference]: With dead ends: 24 [2018-11-07 16:48:00,452 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 16:48:00,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=153, Invalid=718, Unknown=7, NotChecked=114, Total=992 [2018-11-07 16:48:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 16:48:00,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 16:48:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 16:48:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 16:48:00,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-07 16:48:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:48:00,454 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 16:48:00,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 16:48:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 16:48:00,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 16:48:00,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 16:48:00,723 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-07 16:48:00,726 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:48:00,726 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:48:00,726 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:48:00,726 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:48:00,726 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 16:48:00,727 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:48:00,727 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:48:00,727 INFO L425 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-07 16:48:00,727 INFO L425 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2018-11-07 16:48:00,727 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2018-11-07 16:48:00,727 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2018-11-07 16:48:00,728 INFO L425 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2018-11-07 16:48:00,728 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2018-11-07 16:48:00,728 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2018-11-07 16:48:00,728 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2018-11-07 16:48:00,728 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: true [2018-11-07 16:48:00,728 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2018-11-07 16:48:00,729 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2018-11-07 16:48:00,729 INFO L421 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (or (< main_~main__i~0 main_~main__n~0) (= (+ (* 2 main_~main__sum~0) (* 2 main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 main_~main__i~0))) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-11-07 16:48:00,729 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2018-11-07 16:48:00,729 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2018-11-07 16:48:00,735 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,736 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,736 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,737 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,744 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,744 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,745 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,745 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:48:00 BoogieIcfgContainer [2018-11-07 16:48:00,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 16:48:00,748 INFO L168 Benchmark]: Toolchain (without parser) took 18919.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -369.1 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-11-07 16:48:00,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 16:48:00,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 16:48:00,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 16:48:00,752 INFO L168 Benchmark]: Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 16:48:00,752 INFO L168 Benchmark]: RCFGBuilder took 472.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-07 16:48:00,753 INFO L168 Benchmark]: TraceAbstraction took 18108.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 422.6 MB). Peak memory consumption was 422.6 MB. Max. memory is 7.1 GB. [2018-11-07 16:48:00,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 472.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18108.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 422.6 MB). Peak memory consumption was 422.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant [2018-11-07 16:48:00,766 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,766 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,766 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,768 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-07 16:48:00,768 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (main__i < main_~main__n~0 || 2 * main__sum + 2 * main__i == (main_~main__n~0 + 1) * main_~main__n~0) || main_~main__n~0 < main__i) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. SAFE Result, 18.0s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 24 SDslu, 337 SDs, 0 SdLazy, 434 SolverSat, 46 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 75 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 158 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 28 QuantifiedInterpolants, 18423 SizeOfPredicates, 24 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 8/38 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...