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/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:20:07,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:20:07,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:20:07,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:20:07,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:20:07,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:20:07,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:20:07,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:20:07,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:20:07,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:20:07,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:20:07,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:20:07,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:20:07,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:20:07,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:20:07,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:20:07,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:20:07,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:20:07,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:20:07,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:20:07,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:20:07,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:20:07,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:20:07,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:20:07,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-03 19:20:07,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-03 19:20:07,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-03 19:20:07,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-03 19:20:07,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-03 19:20:07,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-03 19:20:07,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 19:20:07,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 19:20:07,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 19:20:07,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 19:20:07,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 19:20:07,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 19:20:07,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 19:20:07,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 19:20:07,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:20:07,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:20:07,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:20:07,617 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 [2019-09-03 19:20:07,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:20:07,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:20:07,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:20:07,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:20:07,638 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:20:07,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:20:07,638 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:20:07,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:20:07,640 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:20:07,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:20:07,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:20:07,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:20:07,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:20:07,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:20:07,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:20:07,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:20:07,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:20:07,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:20:07,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:20:07,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:20:07,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:20:07,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:20:07,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:20:07,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:20:07,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:20:07,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:20:07,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:20:07,693 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:20:07,693 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:20:07,694 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2019-09-03 19:20:07,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b5f4670/64e1ca901c734e9fa0b84888bef42de3/FLAG9c232ca27 [2019-09-03 19:20:08,164 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:20:08,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2019-09-03 19:20:08,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b5f4670/64e1ca901c734e9fa0b84888bef42de3/FLAG9c232ca27 [2019-09-03 19:20:08,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b5f4670/64e1ca901c734e9fa0b84888bef42de3 [2019-09-03 19:20:08,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:20:08,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:20:08,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:08,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:20:08,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:20:08,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:08,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695cd166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08, skipping insertion in model container [2019-09-03 19:20:08,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:08,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:20:08,622 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:20:08,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:08,832 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:20:08,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:08,876 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:20:08,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08 WrapperNode [2019-09-03 19:20:08,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:08,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:20:08,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:20:08,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:20:09,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (1/1) ... [2019-09-03 19:20:09,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:20:09,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:20:09,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:20:09,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:20:09,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (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 [2019-09-03 19:20:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:20:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:20:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:20:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:20:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:20:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:20:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 19:20:09,313 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:20:09,314 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:20:09,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:09 BoogieIcfgContainer [2019-09-03 19:20:09,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:20:09,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:20:09,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:20:09,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:20:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:20:08" (1/3) ... [2019-09-03 19:20:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a6915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:09, skipping insertion in model container [2019-09-03 19:20:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:08" (2/3) ... [2019-09-03 19:20:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a6915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:09, skipping insertion in model container [2019-09-03 19:20:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:09" (3/3) ... [2019-09-03 19:20:09,343 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2019-09-03 19:20:09,369 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:20:09,383 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:20:09,415 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:20:09,445 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:20:09,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:20:09,446 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:20:09,446 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:20:09,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:20:09,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:20:09,446 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:20:09,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:20:09,446 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:20:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-03 19:20:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:20:09,465 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:09,465 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:09,467 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1526440521, now seen corresponding path program 1 times [2019-09-03 19:20:09,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:09,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:09,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:09,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:09,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:09,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:20:09,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:20:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:20:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:20:09,624 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-03 19:20:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:09,642 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-09-03 19:20:09,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:20:09,643 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 19:20:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:09,650 INFO L225 Difference]: With dead ends: 28 [2019-09-03 19:20:09,650 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 19:20:09,654 INFO L628 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 [2019-09-03 19:20:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 19:20:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 19:20:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 19:20:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 19:20:09,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-03 19:20:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:09,690 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 19:20:09,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:20:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 19:20:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 19:20:09,691 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:09,692 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:09,692 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -281053369, now seen corresponding path program 1 times [2019-09-03 19:20:09,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:09,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:09,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:09,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:20:09,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:09,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 19:20:09,799 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 19:20:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 19:20:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:20:09,800 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-09-03 19:20:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:09,845 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-09-03 19:20:09,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 19:20:09,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-03 19:20:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:09,847 INFO L225 Difference]: With dead ends: 20 [2019-09-03 19:20:09,847 INFO L226 Difference]: Without dead ends: 15 [2019-09-03 19:20:09,848 INFO L628 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 [2019-09-03 19:20:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-03 19:20:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-03 19:20:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-03 19:20:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-09-03 19:20:09,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-09-03 19:20:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:09,853 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-09-03 19:20:09,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 19:20:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-09-03 19:20:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:20:09,854 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:09,854 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:09,855 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1999502604, now seen corresponding path program 1 times [2019-09-03 19:20:09,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:09,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:09,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:09,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:09,927 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Function const is already defined. at de.uni_freiburg.informatik.ultimate.logic.NoopScript.declareFun(NoopScript.java:139) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.declareFun(Scriptor.java:113) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.WrapperScript.declareFun(WrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.TermTransferrer.convertApplicationTerm(TermTransferrer.java:172) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:319) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) 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) [2019-09-03 19:20:09,933 INFO L168 Benchmark]: Toolchain (without parser) took 1344.45 ms. Allocated memory was 133.2 MB in the beginning and 201.3 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 133.3 MB in the end (delta: -45.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:09,934 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 133.2 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. [2019-09-03 19:20:09,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.99 ms. Allocated memory is still 133.2 MB. Free memory was 87.3 MB in the beginning and 77.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:09,937 INFO L168 Benchmark]: Boogie Preprocessor took 171.41 ms. Allocated memory was 133.2 MB in the beginning and 201.3 MB in the end (delta: 68.2 MB). Free memory was 77.5 MB in the beginning and 177.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:09,938 INFO L168 Benchmark]: RCFGBuilder took 266.22 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 163.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:09,939 INFO L168 Benchmark]: TraceAbstraction took 606.82 ms. Allocated memory is still 201.3 MB. Free memory was 163.2 MB in the beginning and 133.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:09,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 133.2 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 288.99 ms. Allocated memory is still 133.2 MB. Free memory was 87.3 MB in the beginning and 77.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.41 ms. Allocated memory was 133.2 MB in the beginning and 201.3 MB in the end (delta: 68.2 MB). Free memory was 77.5 MB in the beginning and 177.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.22 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 163.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 606.82 ms. Allocated memory is still 201.3 MB. Free memory was 163.2 MB in the beginning and 133.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Function const is already defined. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Function const is already defined.: de.uni_freiburg.informatik.ultimate.logic.NoopScript.declareFun(NoopScript.java:139) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...