java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 11:29:26,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 11:29:26,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 11:29:26,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 11:29:26,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 11:29:26,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 11:29:26,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 11:29:26,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 11:29:26,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 11:29:26,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 11:29:26,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 11:29:26,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 11:29:26,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 11:29:26,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 11:29:26,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 11:29:26,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 11:29:26,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 11:29:26,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 11:29:26,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 11:29:26,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 11:29:26,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 11:29:26,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 11:29:26,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 11:29:26,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 11:29:26,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 11:29:26,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 11:29:26,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 11:29:26,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 11:29:26,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 11:29:26,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 11:29:26,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 11:29:26,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 11:29:26,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 11:29:26,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 11:29:26,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 11:29:26,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 11:29:26,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-05 11:29:26,687 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 11:29:26,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 11:29:26,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 11:29:26,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 11:29:26,689 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 11:29:26,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 11:29:26,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 11:29:26,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 11:29:26,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 11:29:26,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 11:29:26,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 11:29:26,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 11:29:26,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 11:29:26,690 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 11:29:26,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 11:29:26,691 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 11:29:26,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 11:29:26,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 11:29:26,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 11:29:26,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 11:29:26,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 11:29:26,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:29:26,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 11:29:26,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 11:29:26,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 11:29:26,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 11:29:26,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 11:29:26,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 11:29:26,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 11:29:26,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 11:29:26,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 11:29:26,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 11:29:26,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 11:29:26,743 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 11:29:26,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2019-09-05 11:29:26,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332c679a2/f779eb0ef1fc4bd4ada4f6ca31466414/FLAGc5685c255 [2019-09-05 11:29:27,224 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 11:29:27,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2019-09-05 11:29:27,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332c679a2/f779eb0ef1fc4bd4ada4f6ca31466414/FLAGc5685c255 [2019-09-05 11:29:27,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332c679a2/f779eb0ef1fc4bd4ada4f6ca31466414 [2019-09-05 11:29:27,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 11:29:27,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 11:29:27,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 11:29:27,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 11:29:27,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 11:29:27,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:27,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a823ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27, skipping insertion in model container [2019-09-05 11:29:27,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:27,664 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 11:29:27,684 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 11:29:27,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:29:27,903 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 11:29:27,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:29:27,944 INFO L192 MainTranslator]: Completed translation [2019-09-05 11:29:27,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27 WrapperNode [2019-09-05 11:29:27,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 11:29:27,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 11:29:27,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 11:29:27,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 11:29:28,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (1/1) ... [2019-09-05 11:29:28,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 11:29:28,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 11:29:28,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 11:29:28,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 11:29:28,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (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 [2019-09-05 11:29:28,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 11:29:28,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 11:29:28,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 11:29:28,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 11:29:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 11:29:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 11:29:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 11:29:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 11:29:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 11:29:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 11:29:28,389 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 11:29:28,389 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-05 11:29:28,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:29:28 BoogieIcfgContainer [2019-09-05 11:29:28,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 11:29:28,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 11:29:28,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 11:29:28,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 11:29:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 11:29:27" (1/3) ... [2019-09-05 11:29:28,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b70a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:29:28, skipping insertion in model container [2019-09-05 11:29:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:27" (2/3) ... [2019-09-05 11:29:28,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b70a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:29:28, skipping insertion in model container [2019-09-05 11:29:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:29:28" (3/3) ... [2019-09-05 11:29:28,398 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-09-05 11:29:28,410 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 11:29:28,419 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 11:29:28,438 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 11:29:28,495 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 11:29:28,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 11:29:28,496 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 11:29:28,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 11:29:28,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 11:29:28,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 11:29:28,496 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 11:29:28,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 11:29:28,496 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 11:29:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-05 11:29:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-05 11:29:28,523 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:29:28,524 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:29:28,525 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:29:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:29:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2125374060, now seen corresponding path program 1 times [2019-09-05 11:29:28,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:29:28,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:29:28,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:28,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:28,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:28,618 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:29:28,619 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:29:28,619 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 11:29:28,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:29:28,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-05 11:29:28,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:29:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:29:28,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:29:28,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 11:29:28,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 11:29:28,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 11:29:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:29:28,726 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-09-05 11:29:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:29:28,753 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2019-09-05 11:29:28,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 11:29:28,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-05 11:29:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:29:28,764 INFO L225 Difference]: With dead ends: 52 [2019-09-05 11:29:28,764 INFO L226 Difference]: Without dead ends: 24 [2019-09-05 11:29:28,768 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:29:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-05 11:29:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-05 11:29:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-05 11:29:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-09-05 11:29:28,814 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-09-05 11:29:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:29:28,814 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-09-05 11:29:28,815 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 11:29:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-09-05 11:29:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-05 11:29:28,816 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:29:28,816 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:29:28,817 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:29:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:29:28,818 INFO L82 PathProgramCache]: Analyzing trace with hash 739661195, now seen corresponding path program 1 times [2019-09-05 11:29:28,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:29:28,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:29:28,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:28,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:28,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:28,831 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:29:28,831 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:29:28,832 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 11:29:28,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:29:28,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-05 11:29:28,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:29:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Exception during sending of exit command (exit): Stream Closed [2019-09-05 11:29:28,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:29:28,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 11:29:28,969 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 11:29:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 11:29:28,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:29:28,974 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2019-09-05 11:29:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:29:29,075 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2019-09-05 11:29:29,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:29:29,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-05 11:29:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:29:29,082 INFO L225 Difference]: With dead ends: 49 [2019-09-05 11:29:29,082 INFO L226 Difference]: Without dead ends: 35 [2019-09-05 11:29:29,084 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:29:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-05 11:29:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-09-05 11:29:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-05 11:29:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-09-05 11:29:29,103 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2019-09-05 11:29:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:29:29,104 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-09-05 11:29:29,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 11:29:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-09-05 11:29:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 11:29:29,106 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:29:29,106 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:29:29,108 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:29:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:29:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1656958391, now seen corresponding path program 1 times [2019-09-05 11:29:29,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:29:29,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:29:29,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:29,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:29,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:29,132 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:29:29,135 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:29:29,136 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-05 11:29:29,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 11:29:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:29:29,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-05 11:29:29,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:29:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:29:29,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:29:29,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 11:29:29,243 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 11:29:29,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 11:29:29,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:29:29,244 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2019-09-05 11:29:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:29:29,355 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2019-09-05 11:29:29,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:29:29,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-09-05 11:29:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:29:29,357 INFO L225 Difference]: With dead ends: 57 [2019-09-05 11:29:29,357 INFO L226 Difference]: Without dead ends: 32 [2019-09-05 11:29:29,359 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:29:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-05 11:29:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2019-09-05 11:29:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-05 11:29:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-05 11:29:29,369 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2019-09-05 11:29:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:29:29,369 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-05 11:29:29,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 11:29:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-05 11:29:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-05 11:29:29,371 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:29:29,371 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:29:29,371 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:29:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:29:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1471852900, now seen corresponding path program 1 times [2019-09-05 11:29:29,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:29:29,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:29:29,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:29,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:29,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:29:29,398 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 11:29:29,398 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 11:29:29,398 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 11:29:29,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:29:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 11:29:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 11:29:29,512 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-05 11:29:29,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 11:29:29 BoogieIcfgContainer [2019-09-05 11:29:29,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 11:29:29,545 INFO L168 Benchmark]: Toolchain (without parser) took 1897.44 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 87.9 MB in the beginning and 90.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,546 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.85 ms. Allocated memory is still 132.1 MB. Free memory was 87.7 MB in the beginning and 77.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,548 INFO L168 Benchmark]: Boogie Preprocessor took 132.03 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 175.4 MB in the end (delta: -97.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,549 INFO L168 Benchmark]: RCFGBuilder took 312.92 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 158.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,550 INFO L168 Benchmark]: TraceAbstraction took 1151.54 ms. Allocated memory is still 199.8 MB. Free memory was 158.9 MB in the beginning and 90.6 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2019-09-05 11:29:29,554 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.85 ms. Allocated memory is still 132.1 MB. Free memory was 87.7 MB in the beginning and 77.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.03 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 175.4 MB in the end (delta: -97.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.92 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 158.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1151.54 ms. Allocated memory is still 199.8 MB. Free memory was 158.9 MB in the beginning and 90.6 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 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; [L17] int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 VAL [j=0, maior=-2147482808, matriz={-1:0}, N_COL=1, N_LIN=1] [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ VAL [j=0, k=1, maior=-2147482807, matriz={-1:0}, N_COL=1, N_LIN=1] [L21] COND FALSE !(k