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-LIM.epf -i ../../../trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:58:31,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:58:31,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:58:31,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:58:31,469 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:58:31,470 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:58:31,472 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:58:31,475 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:58:31,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:58:31,478 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:58:31,479 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:58:31,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:58:31,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:58:31,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:58:31,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:58:31,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:58:31,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:58:31,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:58:31,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:58:31,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:58:31,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:58:31,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:58:31,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:58:31,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:58:31,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:58:31,512 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:58:31,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:58:31,514 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:58:31,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:58:31,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:58:31,520 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:58:31,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:58:31,521 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:58:31,521 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:58:31,524 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:58:31,524 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:58:31,525 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-LIM.epf [2018-11-07 21:58:31,551 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:58:31,552 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:58:31,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:58:31,553 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:58:31,553 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:58:31,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:58:31,553 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:58:31,554 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:58:31,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:58:31,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:58:31,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:58:31,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:58:31,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:58:31,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:58:31,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:58:31,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:58:31,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:58:31,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:58:31,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:58:31,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:58:31,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:58:31,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:58:31,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:58:31,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:58:31,558 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:58:31,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:58:31,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:58:31,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:58:31,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:58:31,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:58:31,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:58:31,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:58:31,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:58:31,620 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:58:31,621 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:58:31,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i [2018-11-07 21:58:31,680 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7eb02fe1/35ad24599c454e47a2a7de5d6a79231e/FLAG33b9168a1 [2018-11-07 21:58:32,141 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:58:32,141 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i [2018-11-07 21:58:32,150 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7eb02fe1/35ad24599c454e47a2a7de5d6a79231e/FLAG33b9168a1 [2018-11-07 21:58:32,165 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7eb02fe1/35ad24599c454e47a2a7de5d6a79231e [2018-11-07 21:58:32,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:58:32,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:58:32,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:58:32,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:58:32,180 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:58:32,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15b74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32, skipping insertion in model container [2018-11-07 21:58:32,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:58:32,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:58:32,458 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:58:32,465 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:58:32,499 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:58:32,518 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:58:32,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32 WrapperNode [2018-11-07 21:58:32,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:58:32,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:58:32,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:58:32,519 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:58:32,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:58:32,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:58:32,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:58:32,542 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:58:32,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (1/1) ... [2018-11-07 21:58:32,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:58:32,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:58:32,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:58:32,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:58:32,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (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 21:58:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 21:58:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:58:32,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 21:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 21:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 21:58:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 21:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 21:58:33,178 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:58:33,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:58:33 BoogieIcfgContainer [2018-11-07 21:58:33,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:58:33,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:58:33,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:58:33,183 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:58:33,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:58:32" (1/3) ... [2018-11-07 21:58:33,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad0a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:58:33, skipping insertion in model container [2018-11-07 21:58:33,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:32" (2/3) ... [2018-11-07 21:58:33,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad0a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:58:33, skipping insertion in model container [2018-11-07 21:58:33,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:58:33" (3/3) ... [2018-11-07 21:58:33,187 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_false-unreach-call_true-termination.i [2018-11-07 21:58:33,197 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:58:33,207 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:58:33,223 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:58:33,258 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:58:33,258 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:58:33,258 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:58:33,258 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:58:33,258 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:58:33,258 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:58:33,259 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:58:33,259 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:58:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-07 21:58:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 21:58:33,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:33,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:33,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:33,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash -546249348, now seen corresponding path program 1 times [2018-11-07 21:58:33,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:33,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:33,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:33,380 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 21:58:33,381 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 21:58:33,381 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 21:58:33,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,399 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 21:58:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:33,442 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 21:58:33,444 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 21:58:33,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:58:33,445 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 21:58:33,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,456 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:58:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:33,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:58:33,510 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 21:58:33,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:58:33,539 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 21:58:33,564 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:58:33,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-07 21:58:33,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:58:33,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 21:58:33,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 21:58:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 21:58:33,585 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-07 21:58:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:58:33,611 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2018-11-07 21:58:33,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 21:58:33,613 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-07 21:58:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:58:33,622 INFO L225 Difference]: With dead ends: 76 [2018-11-07 21:58:33,622 INFO L226 Difference]: Without dead ends: 36 [2018-11-07 21:58:33,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 21:58:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-07 21:58:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-07 21:58:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-07 21:58:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-07 21:58:33,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-11-07 21:58:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:58:33,667 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-07 21:58:33,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 21:58:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-07 21:58:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 21:58:33,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:33,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:33,669 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:33,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:33,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1359947222, now seen corresponding path program 1 times [2018-11-07 21:58:33,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:33,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:33,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:33,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:33,679 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 21:58:33,680 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 21:58:33,680 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 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 21:58:33,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,690 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 21:58:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:33,744 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 21:58:33,744 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 21:58:33,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:58:33,745 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 21:58:33,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:33,758 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:58:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:33,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:58:34,041 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 21:58:34,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:58:34,178 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 21:58:34,207 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:58:34,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-07 21:58:34,207 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:58:34,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:58:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:58:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:58:34,210 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-11-07 21:58:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:58:34,376 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-11-07 21:58:34,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:58:34,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-07 21:58:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:58:34,380 INFO L225 Difference]: With dead ends: 75 [2018-11-07 21:58:34,380 INFO L226 Difference]: Without dead ends: 57 [2018-11-07 21:58:34,381 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:58:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-07 21:58:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2018-11-07 21:58:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-07 21:58:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-07 21:58:34,393 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2018-11-07 21:58:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:58:34,394 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-07 21:58:34,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:58:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-07 21:58:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 21:58:34,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:34,396 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:34,396 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:34,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash 153491957, now seen corresponding path program 1 times [2018-11-07 21:58:34,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:34,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:34,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:34,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:34,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:34,406 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 21:58:34,406 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 21:58:34,406 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 21:58:34,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:34,427 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 21:58:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:34,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-11-07 21:58:34,464 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [11], [14], [16], [20], [23], [41], [45], [49], [54], [58], [63], [64], [79], [82], [84], [90], [91], [92], [94] [2018-11-07 21:58:34,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:58:34,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:58:34,642 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:58:34,858 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:58:34,862 INFO L272 AbstractInterpreter]: Visited 24 different actions 66 times. Merged at 6 different actions 36 times. Widened at 2 different actions 4 times. Found 7 fixpoints after 2 different actions. Largest state had 22 variables. [2018-11-07 21:58:34,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:34,907 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:58:34,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:58:34,907 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 21:58:34,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:34,919 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:58:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:34,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:58:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:58:35,053 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:58:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:58:35,215 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:58:35,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-07 21:58:35,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:58:35,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:58:35,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:58:35,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:58:35,217 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2018-11-07 21:58:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:58:35,393 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2018-11-07 21:58:35,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:58:35,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-07 21:58:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:58:35,395 INFO L225 Difference]: With dead ends: 92 [2018-11-07 21:58:35,395 INFO L226 Difference]: Without dead ends: 53 [2018-11-07 21:58:35,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:58:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-07 21:58:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2018-11-07 21:58:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-07 21:58:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-11-07 21:58:35,408 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2018-11-07 21:58:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:58:35,409 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-11-07 21:58:35,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:58:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-11-07 21:58:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 21:58:35,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:35,411 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:35,411 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:35,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1857611747, now seen corresponding path program 1 times [2018-11-07 21:58:35,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:35,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:35,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:35,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:35,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:35,427 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 21:58:35,429 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 21:58:35,429 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 21:58:35,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:35,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 21:58:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 21:58:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 21:58:35,550 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-07 21:58:35,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:58:35 BoogieIcfgContainer [2018-11-07 21:58:35,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:58:35,593 INFO L168 Benchmark]: Toolchain (without parser) took 3418.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -601.5 MB). Peak memory consumption was 153.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:35,596 INFO L168 Benchmark]: CDTParser took 0.27 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 21:58:35,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.96 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 21:58:35,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.44 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 21:58:35,599 INFO L168 Benchmark]: Boogie Preprocessor took 28.35 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 21:58:35,599 INFO L168 Benchmark]: RCFGBuilder took 608.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:35,601 INFO L168 Benchmark]: TraceAbstraction took 2412.66 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: 170.1 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:35,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 341.96 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 22.44 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 28.35 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 608.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2412.66 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: 170.1 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L15] unsigned int N_COL=__VERIFIER_nondet_uint(); [L16] unsigned int j,k; VAL [N_COL=1, N_LIN=1] [L17] FCALL int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 VAL [j=0, maior=0, matriz={6:0}, N_COL=1, N_LIN=1] [L20] COND TRUE jmaior) [L21] k++ VAL [j=0, k=1, maior=0, matriz={6:0}, N_COL=1, N_LIN=1] [L21] COND FALSE !(k