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/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:11:38,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:11:38,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:11:38,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:11:38,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:11:38,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:11:38,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:11:38,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:11:38,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:11:38,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:11:38,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:11:38,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:11:38,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:11:38,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:11:38,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:11:38,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:11:38,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:11:38,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:11:38,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:11:38,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:11:38,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:11:38,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:11:38,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:11:38,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:11:38,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:11:38,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:11:38,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:11:38,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:11:38,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:11:38,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:11:38,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:11:38,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:11:38,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:11:38,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:11:38,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:11:38,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:11:38,087 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 [2019-09-16 16:11:38,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:11:38,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:11:38,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:11:38,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:11:38,104 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:11:38,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:11:38,104 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:11:38,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:11:38,106 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:11:38,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:11:38,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:11:38,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:11:38,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:11:38,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:11:38,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:11:38,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:11:38,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:38,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:11:38,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:11:38,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:11:38,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:11:38,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:11:38,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:11:38,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:11:38,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:11:38,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:11:38,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:11:38,162 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:11:38,163 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:11:38,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2019-09-16 16:11:38,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26962be0/439fffff57384e6d9592f08d0d052e12/FLAG309545460 [2019-09-16 16:11:38,713 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:11:38,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2019-09-16 16:11:38,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26962be0/439fffff57384e6d9592f08d0d052e12/FLAG309545460 [2019-09-16 16:11:39,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26962be0/439fffff57384e6d9592f08d0d052e12 [2019-09-16 16:11:39,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:11:39,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:11:39,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:39,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:11:39,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:11:39,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654f2331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39, skipping insertion in model container [2019-09-16 16:11:39,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,157 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:11:39,174 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:11:39,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:39,352 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:11:39,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:39,381 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:11:39,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39 WrapperNode [2019-09-16 16:11:39,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:39,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:11:39,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:11:39,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:11:39,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (1/1) ... [2019-09-16 16:11:39,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:11:39,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:11:39,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:11:39,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:11:39,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (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 [2019-09-16 16:11:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:11:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:11:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:11:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-09-16 16:11:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:11:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:11:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:11:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-16 16:11:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:11:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-09-16 16:11:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:11:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:11:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:11:39,736 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:11:39,737 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:11:39,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:39 BoogieIcfgContainer [2019-09-16 16:11:39,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:11:39,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:11:39,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:11:39,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:11:39,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:11:39" (1/3) ... [2019-09-16 16:11:39,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a93a613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:39, skipping insertion in model container [2019-09-16 16:11:39,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:39" (2/3) ... [2019-09-16 16:11:39,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a93a613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:39, skipping insertion in model container [2019-09-16 16:11:39,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:39" (3/3) ... [2019-09-16 16:11:39,747 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-09-16 16:11:39,757 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:11:39,764 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:11:39,781 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:11:39,808 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:11:39,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:11:39,808 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:11:39,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:11:39,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:11:39,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:11:39,809 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:11:39,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:11:39,809 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:11:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-16 16:11:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:11:39,829 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:39,830 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:39,832 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:39,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-09-16 16:11:39,838 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:39,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:39,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:39,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:39,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:39,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:39,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:11:39,965 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:11:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:11:39,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:39,978 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-16 16:11:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:39,999 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-09-16 16:11:40,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:11:40,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-16 16:11:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:40,010 INFO L225 Difference]: With dead ends: 35 [2019-09-16 16:11:40,010 INFO L226 Difference]: Without dead ends: 18 [2019-09-16 16:11:40,014 INFO L636 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 [2019-09-16 16:11:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-16 16:11:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-16 16:11:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-16 16:11:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-16 16:11:40,057 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-09-16 16:11:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:40,058 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-16 16:11:40,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:11:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-16 16:11:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:11:40,060 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:40,060 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:40,061 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:40,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:40,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-09-16 16:11:40,061 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:40,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:40,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:40,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:40,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:40,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:40,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:11:40,166 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:11:40,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:11:40,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:11:40,168 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-09-16 16:11:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:40,261 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-09-16 16:11:40,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:11:40,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-16 16:11:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:40,265 INFO L225 Difference]: With dead ends: 18 [2019-09-16 16:11:40,265 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:11:40,267 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:11:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:11:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:11:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:11:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:11:40,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-09-16 16:11:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:40,269 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:11:40,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:11:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:11:40,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:11:40,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:11:40,336 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:11:40,337 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:11:40,337 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:11:40,337 INFO L443 ceAbstractionStarter]: For program point fooEXIT(lines 15 17) no Hoare annotation was computed. [2019-09-16 16:11:40,338 INFO L446 ceAbstractionStarter]: At program point fooENTRY(lines 15 17) the Hoare annotation is: true [2019-09-16 16:11:40,338 INFO L443 ceAbstractionStarter]: For program point fooFINAL(lines 15 17) no Hoare annotation was computed. [2019-09-16 16:11:40,338 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:11:40,338 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2019-09-16 16:11:40,338 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:11:40,339 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:11:40,339 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2019-09-16 16:11:40,339 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2019-09-16 16:11:40,339 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-09-16 16:11:40,340 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 24) no Hoare annotation was computed. [2019-09-16 16:11:40,343 INFO L446 ceAbstractionStarter]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2019-09-16 16:11:40,344 INFO L446 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: true [2019-09-16 16:11:40,344 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2019-09-16 16:11:40,344 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2019-09-16 16:11:40,344 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-16 16:11:40,345 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-16 16:11:40,345 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:11:40,345 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-16 16:11:40,345 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-16 16:11:40,345 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:11:40,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:11:40 BoogieIcfgContainer [2019-09-16 16:11:40,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:11:40,356 INFO L168 Benchmark]: Toolchain (without parser) took 1213.16 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 89.7 MB in the beginning and 130.8 MB in the end (delta: -41.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:40,357 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory is still 107.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 16:11:40,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.36 ms. Allocated memory is still 133.7 MB. Free memory was 89.2 MB in the beginning and 79.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:40,359 INFO L168 Benchmark]: Boogie Preprocessor took 109.68 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.7 MB in the beginning and 175.9 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:40,360 INFO L168 Benchmark]: RCFGBuilder took 245.26 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 164.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:40,361 INFO L168 Benchmark]: TraceAbstraction took 613.02 ms. Allocated memory is still 199.8 MB. Free memory was 163.3 MB in the beginning and 130.8 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:40,365 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory is still 107.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.36 ms. Allocated memory is still 133.7 MB. Free memory was 89.2 MB in the beginning and 79.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.68 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.7 MB in the beginning and 175.9 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.26 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 164.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 613.02 ms. Allocated memory is still 199.8 MB. Free memory was 163.3 MB in the beginning and 130.8 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 6 SDslu, 41 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...