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.epf -i ../../../trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:52:40,648 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:52:40,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:52:40,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:52:40,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:52:40,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:52:40,672 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:52:40,675 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:52:40,679 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:52:40,680 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:52:40,682 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:52:40,682 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:52:40,683 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:52:40,685 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:52:40,686 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:52:40,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:52:40,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:52:40,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:52:40,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:52:40,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:52:40,702 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:52:40,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:52:40,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:52:40,709 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:52:40,709 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:52:40,713 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:52:40,716 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:52:40,717 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:52:40,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:52:40,721 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:52:40,721 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:52:40,723 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:52:40,723 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:52:40,724 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:52:40,725 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:52:40,725 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:52:40,725 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:52:40,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:52:40,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:52:40,742 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:52:40,742 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:52:40,742 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:52:40,743 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:52:40,743 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:52:40,743 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:52:40,743 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:52:40,743 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:52:40,743 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:52:40,744 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:52:40,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:52:40,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:52:40,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:52:40,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:52:40,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:52:40,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:52:40,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:52:40,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:52:40,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:52:40,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:52:40,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:52:40,747 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:52:40,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:52:40,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:52:40,748 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:52:40,748 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:52:40,748 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:52:40,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:52:40,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:52:40,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:52:40,820 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:52:40,820 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:52:40,821 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i [2018-11-07 04:52:40,882 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf79135a/624d60f457334c339713338d3d7120c0/FLAG294a0fd3d [2018-11-07 04:52:41,285 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:52:41,286 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_false-unreach-call_true-termination.i [2018-11-07 04:52:41,292 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf79135a/624d60f457334c339713338d3d7120c0/FLAG294a0fd3d [2018-11-07 04:52:41,306 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf79135a/624d60f457334c339713338d3d7120c0 [2018-11-07 04:52:41,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:52:41,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:52:41,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:52:41,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:52:41,326 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:52:41,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53459a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41, skipping insertion in model container [2018-11-07 04:52:41,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:52:41,365 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:52:41,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:52:41,624 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:52:41,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:52:41,671 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:52:41,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41 WrapperNode [2018-11-07 04:52:41,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:52:41,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:52:41,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:52:41,673 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:52:41,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:52:41,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:52:41,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:52:41,701 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:52:41,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (1/1) ... [2018-11-07 04:52:41,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:52:41,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:52:41,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:52:41,733 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:52:41,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (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 04:52:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 04:52:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:52:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:52:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 04:52:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:52:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:52:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:52:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:52:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 04:52:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 04:52:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 04:52:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 04:52:42,328 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:52:42,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:42 BoogieIcfgContainer [2018-11-07 04:52:42,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:52:42,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:52:42,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:52:42,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:52:42,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:52:41" (1/3) ... [2018-11-07 04:52:42,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311ec888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:42, skipping insertion in model container [2018-11-07 04:52:42,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:52:41" (2/3) ... [2018-11-07 04:52:42,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311ec888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:52:42, skipping insertion in model container [2018-11-07 04:52:42,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:52:42" (3/3) ... [2018-11-07 04:52:42,338 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_false-unreach-call_true-termination.i [2018-11-07 04:52:42,349 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:52:42,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:52:42,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:52:42,419 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:52:42,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:52:42,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:52:42,420 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:52:42,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:52:42,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:52:42,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:52:42,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:52:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-07 04:52:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 04:52:42,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:52:42,450 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 04:52:42,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:52:42,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:52:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash -546249348, now seen corresponding path program 1 times [2018-11-07 04:52:42,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:52:42,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:42,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:42,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:52:42,546 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 04:52:42,546 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 04:52:42,547 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 04:52:42,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,561 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 04:52:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:42,619 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 04:52:42,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:52:42,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:52:42,621 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 04:52:42,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,632 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:52:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:42,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:52:42,686 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 04:52:42,686 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:52:42,719 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 04:52:42,743 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:52:42,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-07 04:52:42,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:52:42,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 04:52:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 04:52:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 04:52:42,769 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-07 04:52:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:52:42,799 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2018-11-07 04:52:42,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 04:52:42,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-07 04:52:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:52:42,812 INFO L225 Difference]: With dead ends: 76 [2018-11-07 04:52:42,812 INFO L226 Difference]: Without dead ends: 36 [2018-11-07 04:52:42,816 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 04:52:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-07 04:52:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-07 04:52:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-07 04:52:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-07 04:52:42,865 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-11-07 04:52:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:52:42,866 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-07 04:52:42,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 04:52:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-07 04:52:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 04:52:42,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:52:42,868 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 04:52:42,868 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:52:42,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:52:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1359947222, now seen corresponding path program 1 times [2018-11-07 04:52:42,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:52:42,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:42,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:42,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:52:42,885 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 04:52:42,885 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 04:52:42,886 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 04:52:42,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,904 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 04:52:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:42,977 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 04:52:42,977 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:52:42,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:52:42,978 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 04:52:42,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:42,998 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:52:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:43,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:52:43,315 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 04:52:43,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:52:43,483 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 04:52:43,506 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:52:43,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-07 04:52:43,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:52:43,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:52:43,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:52:43,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:52:43,510 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-11-07 04:52:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:52:43,773 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-11-07 04:52:43,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:52:43,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-07 04:52:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:52:43,780 INFO L225 Difference]: With dead ends: 75 [2018-11-07 04:52:43,780 INFO L226 Difference]: Without dead ends: 57 [2018-11-07 04:52:43,781 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 04:52:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-07 04:52:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2018-11-07 04:52:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-07 04:52:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-07 04:52:43,802 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2018-11-07 04:52:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:52:43,804 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-07 04:52:43,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:52:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-07 04:52:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 04:52:43,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:52:43,807 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 04:52:43,807 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:52:43,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:52:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash 153491957, now seen corresponding path program 1 times [2018-11-07 04:52:43,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:52:43,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:43,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:43,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:43,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:52:43,823 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 04:52:43,823 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 04:52:43,824 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 04:52:43,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:43,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 04:52:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:43,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-11-07 04:52:43,888 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 04:52:43,939 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:52:43,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:52:44,132 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:52:44,639 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:52:44,641 INFO L272 AbstractInterpreter]: Visited 24 different actions 108 times. Merged at 6 different actions 72 times. Widened at 2 different actions 16 times. Found 13 fixpoints after 2 different actions. Largest state had 22 variables. [2018-11-07 04:52:44,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:52:44,685 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:52:44,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:52:44,686 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 04:52:44,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:44,703 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:52:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:52:44,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:52:44,896 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 04:52:44,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:52:45,042 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 04:52:45,073 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:52:45,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-07 04:52:45,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:52:45,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:52:45,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:52:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:52:45,075 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2018-11-07 04:52:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:52:45,219 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2018-11-07 04:52:45,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:52:45,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-07 04:52:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:52:45,222 INFO L225 Difference]: With dead ends: 92 [2018-11-07 04:52:45,222 INFO L226 Difference]: Without dead ends: 53 [2018-11-07 04:52:45,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:52:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-07 04:52:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2018-11-07 04:52:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-07 04:52:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-11-07 04:52:45,230 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2018-11-07 04:52:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:52:45,231 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-11-07 04:52:45,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:52:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-11-07 04:52:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 04:52:45,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:52:45,232 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 04:52:45,232 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:52:45,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:52:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1857611747, now seen corresponding path program 1 times [2018-11-07 04:52:45,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:52:45,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:45,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:45,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:52:45,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:52:45,242 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 04:52:45,242 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 04:52:45,242 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 04:52:45,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:52:45,264 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 04:52:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 04:52:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 04:52:45,352 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-07 04:52:45,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:52:45 BoogieIcfgContainer [2018-11-07 04:52:45,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:52:45,390 INFO L168 Benchmark]: Toolchain (without parser) took 4069.89 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -459.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. [2018-11-07 04:52:45,393 INFO L168 Benchmark]: CDTParser took 0.20 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 04:52:45,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.70 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 04:52:45,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.43 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 04:52:45,395 INFO L168 Benchmark]: Boogie Preprocessor took 31.19 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 04:52:45,395 INFO L168 Benchmark]: RCFGBuilder took 597.02 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -755.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2018-11-07 04:52:45,396 INFO L168 Benchmark]: TraceAbstraction took 3059.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 284.7 MB). Peak memory consumption was 284.7 MB. Max. memory is 7.1 GB. [2018-11-07 04:52:45,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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. * CACSL2BoogieTranslator took 349.70 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 28.43 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 31.19 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 597.02 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -755.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3059.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 284.7 MB). Peak memory consumption was 284.7 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