java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 10:07:22,330 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 10:07:22,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 10:07:22,351 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 10:07:22,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 10:07:22,353 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 10:07:22,355 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 10:07:22,357 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 10:07:22,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 10:07:22,360 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 10:07:22,363 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 10:07:22,363 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 10:07:22,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 10:07:22,365 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 10:07:22,366 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 10:07:22,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 10:07:22,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 10:07:22,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 10:07:22,374 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 10:07:22,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 10:07:22,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 10:07:22,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 10:07:22,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 10:07:22,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 10:07:22,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 10:07:22,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 10:07:22,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 10:07:22,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 10:07:22,387 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 10:07:22,392 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 10:07:22,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 10:07:22,393 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 10:07:22,393 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 10:07:22,393 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 10:07:22,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 10:07:22,398 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 10:07:22,399 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 10:07:22,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 10:07:22,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 10:07:22,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 10:07:22,426 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 10:07:22,426 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 10:07:22,427 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 10:07:22,427 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 10:07:22,427 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 10:07:22,427 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 10:07:22,427 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 10:07:22,428 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 10:07:22,428 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 10:07:22,429 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 10:07:22,429 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 10:07:22,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 10:07:22,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 10:07:22,430 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 10:07:22,430 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 10:07:22,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 10:07:22,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 10:07:22,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 10:07:22,431 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 10:07:22,432 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 10:07:22,432 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 10:07:22,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 10:07:22,433 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 10:07:22,433 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 10:07:22,433 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 10:07:22,433 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 10:07:22,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 10:07:22,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 10:07:22,434 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 10:07:22,434 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 10:07:22,434 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 10:07:22,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 10:07:22,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 10:07:22,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 10:07:22,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 10:07:22,524 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 10:07:22,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-10-23 10:07:22,591 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c8b6bc57/62a1db39ee0c42bc83b32a7ce586d10e/FLAG582f558f2 [2018-10-23 10:07:23,057 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 10:07:23,058 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-10-23 10:07:23,065 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c8b6bc57/62a1db39ee0c42bc83b32a7ce586d10e/FLAG582f558f2 [2018-10-23 10:07:23,085 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c8b6bc57/62a1db39ee0c42bc83b32a7ce586d10e [2018-10-23 10:07:23,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 10:07:23,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 10:07:23,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 10:07:23,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 10:07:23,105 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 10:07:23,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d91e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23, skipping insertion in model container [2018-10-23 10:07:23,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 10:07:23,143 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 10:07:23,303 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:07:23,307 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 10:07:23,323 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:07:23,337 INFO L193 MainTranslator]: Completed translation [2018-10-23 10:07:23,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23 WrapperNode [2018-10-23 10:07:23,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 10:07:23,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 10:07:23,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 10:07:23,339 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 10:07:23,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 10:07:23,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 10:07:23,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 10:07:23,357 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 10:07:23,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... [2018-10-23 10:07:23,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 10:07:23,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 10:07:23,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 10:07:23,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 10:07:23,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 10:07:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 10:07:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 10:07:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 10:07:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 10:07:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 10:07:23,726 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 10:07:23,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:23 BoogieIcfgContainer [2018-10-23 10:07:23,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 10:07:23,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 10:07:23,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 10:07:23,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 10:07:23,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:07:23" (1/3) ... [2018-10-23 10:07:23,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c19b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:23, skipping insertion in model container [2018-10-23 10:07:23,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:23" (2/3) ... [2018-10-23 10:07:23,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c19b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:23, skipping insertion in model container [2018-10-23 10:07:23,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:23" (3/3) ... [2018-10-23 10:07:23,735 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-10-23 10:07:23,746 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 10:07:23,755 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 10:07:23,779 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 10:07:23,822 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 10:07:23,822 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 10:07:23,822 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 10:07:23,823 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 10:07:23,823 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 10:07:23,823 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 10:07:23,823 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 10:07:23,823 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 10:07:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-10-23 10:07:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 10:07:23,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:23,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:23,864 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:23,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:23,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-10-23 10:07:23,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:23,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:23,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:23,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:23,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:23,980 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 10:07:23,980 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 10:07:23,980 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:23,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:23,994 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-23 10:07:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:24,049 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-23 10:07:24,052 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 10:07:24,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:07:24,052 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:24,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:24,063 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 10:07:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:24,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 10:07:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:24,183 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 10:07:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:24,268 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:07:24,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-10-23 10:07:24,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:07:24,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 10:07:24,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 10:07:24,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:07:24,292 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-10-23 10:07:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:07:24,403 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-10-23 10:07:24,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 10:07:24,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-23 10:07:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:07:24,415 INFO L225 Difference]: With dead ends: 26 [2018-10-23 10:07:24,416 INFO L226 Difference]: Without dead ends: 13 [2018-10-23 10:07:24,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:07:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-23 10:07:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-23 10:07:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-23 10:07:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-23 10:07:24,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-23 10:07:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:07:24,462 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-23 10:07:24,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 10:07:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-23 10:07:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 10:07:24,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:24,464 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:24,464 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:24,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-10-23 10:07:24,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:24,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:24,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:24,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:24,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:24,477 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 10:07:24,478 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 10:07:24,478 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:24,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:24,493 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-23 10:07:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:24,549 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-10-23 10:07:24,551 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-10-23 10:07:24,605 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 10:07:24,605 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 10:07:25,278 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 10:07:25,279 INFO L272 AbstractInterpreter]: Visited 12 different actions 50 times. Merged at 4 different actions 37 times. Widened at 1 different actions 7 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-10-23 10:07:25,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:25,289 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 10:07:25,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:07:25,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:25,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:25,298 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 10:07:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:25,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 10:07:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:25,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 10:07:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:25,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 10:07:25,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-10-23 10:07:25,922 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 10:07:25,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 10:07:25,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 10:07:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 10:07:25,924 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-10-23 10:07:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:07:26,082 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-23 10:07:26,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 10:07:26,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-10-23 10:07:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:07:26,083 INFO L225 Difference]: With dead ends: 17 [2018-10-23 10:07:26,083 INFO L226 Difference]: Without dead ends: 14 [2018-10-23 10:07:26,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-23 10:07:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-23 10:07:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-23 10:07:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-23 10:07:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-23 10:07:26,089 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-23 10:07:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:07:26,090 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-23 10:07:26,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 10:07:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-23 10:07:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:07:26,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:26,091 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:26,091 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:26,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:26,092 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-10-23 10:07:26,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:26,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:26,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:26,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:26,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:26,106 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-23 10:07:26,106 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 10:07:26,107 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:26,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 10:07:26,124 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-23 10:07:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:26,154 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-23 10:07:26,154 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 10:07:26,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:07:26,155 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 10:07:26,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 10:07:26,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-23 10:07:26,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 10:07:26,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 10:07:26,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 10:07:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:26,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 10:07:26,395 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 [2018-10-23 10:07:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-10-23 10:07:26,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 10:07:26,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-10-23 10:07:26,511 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 10:07:26,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 10:07:26,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 10:07:26,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2018-10-23 10:07:26,513 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-10-23 10:07:26,744 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2018-10-23 10:07:26,996 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-10-23 10:07:31,413 WARN L179 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-23 10:07:31,539 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_~__VERIFIER_assert__cond~0 1) (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 [2018-10-23 10:07:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:07:31,541 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-10-23 10:07:31,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 10:07:31,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-10-23 10:07:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:07:31,542 INFO L225 Difference]: With dead ends: 16 [2018-10-23 10:07:31,542 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 10:07:31,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=48, Invalid=114, Unknown=2, NotChecked=46, Total=210 [2018-10-23 10:07:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 10:07:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 10:07:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 10:07:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 10:07:31,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-23 10:07:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:07:31,545 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 10:07:31,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 10:07:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 10:07:31,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 10:07:31,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 10:07:31,775 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2018-10-23 10:07:31,779 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-23 10:07:31,779 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-23 10:07:31,779 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:07:31,779 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:07:31,780 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-23 10:07:31,780 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-23 10:07:31,780 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 10:07:31,780 INFO L421 ceAbstractionStarter]: At program point L33(lines 25 54) the Hoare annotation is: (and (<= 1 main_~main__n~0) (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)))) [2018-10-23 10:07:31,780 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: true [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2018-10-23 10:07:31,781 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2018-10-23 10:07:31,786 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,787 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,787 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,788 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,794 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,794 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,794 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,794 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:07:31 BoogieIcfgContainer [2018-10-23 10:07:31,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 10:07:31,799 INFO L168 Benchmark]: Toolchain (without parser) took 8700.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -532.1 MB). Peak memory consumption was 221.8 MB. Max. memory is 7.1 GB. [2018-10-23 10:07:31,801 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. [2018-10-23 10:07:31,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.49 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. [2018-10-23 10:07:31,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.13 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. [2018-10-23 10:07:31,803 INFO L168 Benchmark]: Boogie Preprocessor took 16.32 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. [2018-10-23 10:07:31,803 INFO L168 Benchmark]: RCFGBuilder took 353.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-23 10:07:31,804 INFO L168 Benchmark]: TraceAbstraction took 8070.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.5 MB). Peak memory consumption was 251.5 MB. Max. memory is 7.1 GB. [2018-10-23 10:07:31,810 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 237.49 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 18.13 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 16.32 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 353.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8070.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.5 MB). Peak memory consumption was 251.5 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: 44]: 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: 25]: Loop Invariant [2018-10-23 10:07:31,820 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,820 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,820 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,821 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,821 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,821 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,822 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-10-23 10:07:31,822 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (1 <= main__n && (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, 16 locations, 1 error locations. SAFE Result, 7.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 5.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 19 SDslu, 79 SDs, 0 SdLazy, 64 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 42 HoareAnnotationTreeSize, 5 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 2 QuantifiedInterpolants, 2539 SizeOfPredicates, 14 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...