/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/bAnd5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:25:43,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:25:43,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:25:43,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:25:43,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:25:43,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:25:43,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:25:43,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:25:43,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:25:43,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:25:43,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:25:43,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:25:43,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:25:43,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:25:43,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:25:43,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:25:43,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:25:43,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:25:43,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:25:43,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:25:43,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:25:43,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:25:43,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:25:43,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:25:43,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:25:43,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:25:43,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:25:43,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:25:43,559 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 [2019-11-06 22:25:43,590 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:25:43,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:25:43,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:25:43,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:25:43,596 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:25:43,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:25:43,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:25:43,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:25:43,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:25:43,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:25:43,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:25:43,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:25:43,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:25:43,599 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:25:43,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:25:43,601 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:25:43,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:25:43,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:25:43,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:25:43,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:25:43,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:25:43,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:25:43,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:25:43,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:25:43,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:25:43,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:25:43,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:25:43,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:25:43,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:25:43,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:25:43,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:25:43,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:25:43,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:25:43,927 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:25:43,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd5.i [2019-11-06 22:25:44,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f37f7e7/8af729f860744d67849edd6e8cd11fee/FLAGb384ff872 [2019-11-06 22:25:44,474 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:25:44,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd5.i [2019-11-06 22:25:44,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f37f7e7/8af729f860744d67849edd6e8cd11fee/FLAGb384ff872 [2019-11-06 22:25:44,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f37f7e7/8af729f860744d67849edd6e8cd11fee [2019-11-06 22:25:44,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:25:44,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:25:44,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:25:44,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:25:44,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:25:44,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:44" (1/1) ... [2019-11-06 22:25:44,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521920b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44, skipping insertion in model container [2019-11-06 22:25:44,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:44" (1/1) ... [2019-11-06 22:25:44,886 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:25:44,911 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:25:45,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:25:45,120 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:25:45,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:25:45,272 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:25:45,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45 WrapperNode [2019-11-06 22:25:45,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:25:45,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:25:45,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:25:45,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:25:45,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (1/1) ... [2019-11-06 22:25:45,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:25:45,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:25:45,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:25:45,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:25:45,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (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 [2019-11-06 22:25:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:25:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:25:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2019-11-06 22:25:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:25:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:25:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:25:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2019-11-06 22:25:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:25:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:25:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:25:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:25:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:25:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:25:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:25:45,673 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:25:45,673 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:25:45,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:45 BoogieIcfgContainer [2019-11-06 22:25:45,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:25:45,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:25:45,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:25:45,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:25:45,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:25:44" (1/3) ... [2019-11-06 22:25:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753163f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:45, skipping insertion in model container [2019-11-06 22:25:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:45" (2/3) ... [2019-11-06 22:25:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753163f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:45, skipping insertion in model container [2019-11-06 22:25:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:45" (3/3) ... [2019-11-06 22:25:45,690 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2019-11-06 22:25:45,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:25:45,712 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:25:45,723 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:25:45,756 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:25:45,756 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:25:45,756 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:25:45,756 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:25:45,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:25:45,756 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:25:45,757 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:25:45,757 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:25:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-06 22:25:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 22:25:45,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:45,783 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:45,785 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2019-11-06 22:25:45,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:45,798 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656222535] [2019-11-06 22:25:45,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:45,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656222535] [2019-11-06 22:25:45,956 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:25:45,956 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:25:45,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382971515] [2019-11-06 22:25:45,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:25:45,965 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:25:45,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:25:45,982 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-06 22:25:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:25:46,006 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-11-06 22:25:46,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:25:46,008 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-11-06 22:25:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:25:46,016 INFO L225 Difference]: With dead ends: 57 [2019-11-06 22:25:46,017 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 22:25:46,021 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:25:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 22:25:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 22:25:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:25:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-06 22:25:46,066 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-11-06 22:25:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:25:46,067 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-06 22:25:46,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:25:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-06 22:25:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 22:25:46,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:46,070 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:46,071 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2019-11-06 22:25:46,072 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:46,072 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406285173] [2019-11-06 22:25:46,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:46,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406285173] [2019-11-06 22:25:46,283 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:25:46,284 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:25:46,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113513548] [2019-11-06 22:25:46,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:25:46,287 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:46,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:25:46,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:25:46,289 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-11-06 22:25:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:25:46,361 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-06 22:25:46,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:25:46,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-06 22:25:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:25:46,363 INFO L225 Difference]: With dead ends: 47 [2019-11-06 22:25:46,363 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 22:25:46,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:25:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 22:25:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-06 22:25:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 22:25:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-06 22:25:46,381 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-11-06 22:25:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:25:46,382 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-06 22:25:46,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:25:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-06 22:25:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 22:25:46,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:46,385 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:46,386 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2019-11-06 22:25:46,386 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:46,387 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124536260] [2019-11-06 22:25:46,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:25:46,531 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124536260] [2019-11-06 22:25:46,533 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506670594] [2019-11-06 22:25:46,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 22:25:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:46,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:25:46,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:25:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:46,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:25:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:46,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [850919878] [2019-11-06 22:25:46,809 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 36 [2019-11-06 22:25:46,853 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:25:46,853 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:25:46,918 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:25:46,919 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-11-06 22:25:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:46,923 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:25:46,981 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:25:46,981 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:25:46,987 INFO L553 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-11-06 22:25:46,987 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:25:46,988 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:25:46,988 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4, 4] total 10 [2019-11-06 22:25:46,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994337930] [2019-11-06 22:25:46,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:25:46,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:46,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:25:46,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:25:46,990 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-11-06 22:25:46,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:25:47,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:47,197 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 258#true or 520#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:25:47,203 INFO L168 Benchmark]: Toolchain (without parser) took 2332.48 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 103.6 MB in the beginning and 197.8 MB in the end (delta: -94.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:25:47,204 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:25:47,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.01 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 182.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:47,206 INFO L168 Benchmark]: Boogie Preprocessor took 41.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 179.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:47,207 INFO L168 Benchmark]: RCFGBuilder took 359.57 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 163.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:47,208 INFO L168 Benchmark]: TraceAbstraction took 1518.64 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 163.1 MB in the beginning and 197.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:25:47,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.01 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 182.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 179.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.57 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 163.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1518.64 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 163.1 MB in the beginning and 197.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 258#true or 520#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 258#true or 520#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...