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/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:21:29,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:21:29,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:21:29,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 19:21:29,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:21:29,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:21:29,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:21:29,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:21:29,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:21:29,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:21:29,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:21:29,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:21:29,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:21:29,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:21:29,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:21:29,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:21:29,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:21:29,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:21:29,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:21:29,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:21:29,058 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 19:21:29,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:21:29,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:21:29,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:21:29,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:21:29,074 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:21:29,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:21:29,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:21:29,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:21:29,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:21:29,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:21:29,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:21:29,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:21:29,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:21:29,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:21:29,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:21:29,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:21:29,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:21:29,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:21:29,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:21:29,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:21:29,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:21:29,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:21:29,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:21:29,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:21:29,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:21:29,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:21:29,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:21:29,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:21:29,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:21:29,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:21:29,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:21:29,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:21:29,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:21:29,152 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:21:29,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2019-09-03 19:21:29,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbd8c6b4/81e38bda96f54c3aa4a5ad415656dbd8/FLAG76af53212 [2019-09-03 19:21:29,654 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:21:29,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2019-09-03 19:21:29,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbd8c6b4/81e38bda96f54c3aa4a5ad415656dbd8/FLAG76af53212 [2019-09-03 19:21:30,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bbd8c6b4/81e38bda96f54c3aa4a5ad415656dbd8 [2019-09-03 19:21:30,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:21:30,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:21:30,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:30,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:21:30,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:21:30,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c983d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30, skipping insertion in model container [2019-09-03 19:21:30,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,059 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:21:30,076 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:21:30,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:30,237 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:21:30,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:30,273 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:21:30,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30 WrapperNode [2019-09-03 19:21:30,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:30,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:21:30,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:21:30,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:21:30,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (1/1) ... [2019-09-03 19:21:30,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:21:30,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:21:30,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:21:30,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:21:30,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (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 19:21:30,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:21:30,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:21:30,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:21:30,439 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-03 19:21:30,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:21:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:21:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:21:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:21:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-03 19:21:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:21:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-03 19:21:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:21:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:21:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:21:30,657 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:21:30,658 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-03 19:21:30,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:30 BoogieIcfgContainer [2019-09-03 19:21:30,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:21:30,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:21:30,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:21:30,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:21:30,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:21:30" (1/3) ... [2019-09-03 19:21:30,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cacb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:30, skipping insertion in model container [2019-09-03 19:21:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:30" (2/3) ... [2019-09-03 19:21:30,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cacb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:30, skipping insertion in model container [2019-09-03 19:21:30,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:30" (3/3) ... [2019-09-03 19:21:30,667 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2019-09-03 19:21:30,676 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:21:30,684 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:21:30,701 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:21:30,744 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:21:30,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:21:30,745 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:21:30,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:21:30,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:21:30,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:21:30,746 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:21:30,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:21:30,747 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:21:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-09-03 19:21:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:21:30,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:30,789 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:30,793 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1886719170, now seen corresponding path program 1 times [2019-09-03 19:21:30,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:30,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:30,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:30,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:30,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:30,944 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 19:21:30,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:30,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:21:30,949 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:21:30,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:21:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:21:30,964 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-09-03 19:21:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:30,985 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2019-09-03 19:21:30,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:21:30,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-03 19:21:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:31,008 INFO L225 Difference]: With dead ends: 51 [2019-09-03 19:21:31,009 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 19:21:31,013 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 19:21:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 19:21:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 19:21:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 19:21:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-03 19:21:31,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-03 19:21:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:31,054 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-03 19:21:31,054 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:21:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-03 19:21:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:21:31,055 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:31,055 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:31,056 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:31,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1883025086, now seen corresponding path program 1 times [2019-09-03 19:21:31,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:31,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:31,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:31,163 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 19:21:31,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:31,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:21:31,166 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:21:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:21:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:21:31,167 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2019-09-03 19:21:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:31,218 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-09-03 19:21:31,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:21:31,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-03 19:21:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:31,219 INFO L225 Difference]: With dead ends: 16 [2019-09-03 19:21:31,219 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:21:31,221 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:21:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:21:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:21:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:21:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:21:31,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-03 19:21:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:31,224 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:21:31,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:21:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:21:31,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:21:31,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:21:31,281 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point L17(lines 11 33) no Hoare annotation was computed. [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2019-09-03 19:21:31,282 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 11 33) no Hoare annotation was computed. [2019-09-03 19:21:31,283 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 11 33) the Hoare annotation is: true [2019-09-03 19:21:31,283 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 31) no Hoare annotation was computed. [2019-09-03 19:21:31,283 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 22 32) the Hoare annotation is: true [2019-09-03 19:21:31,283 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-09-03 19:21:31,283 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 11 33) no Hoare annotation was computed. [2019-09-03 19:21:31,284 INFO L439 ceAbstractionStarter]: At program point L16-2(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2019-09-03 19:21:31,284 INFO L439 ceAbstractionStarter]: At program point L16-3(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2019-09-03 19:21:31,284 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:31,284 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:21:31,285 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:21:31,285 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:21:31,285 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 34 42) the Hoare annotation is: true [2019-09-03 19:21:31,287 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 34 42) no Hoare annotation was computed. [2019-09-03 19:21:31,287 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 34 42) no Hoare annotation was computed. [2019-09-03 19:21:31,287 INFO L446 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2019-09-03 19:21:31,287 INFO L443 ceAbstractionStarter]: For program point L39-1(lines 36 40) no Hoare annotation was computed. [2019-09-03 19:21:31,287 INFO L446 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: true [2019-09-03 19:21:31,288 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2019-09-03 19:21:31,289 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:21:31,290 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:21:31,291 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:21:31,291 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:21:31,291 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:21:31,291 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:21:31,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:21:31 BoogieIcfgContainer [2019-09-03 19:21:31,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:21:31,307 INFO L168 Benchmark]: Toolchain (without parser) took 1263.31 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 83.5 MB in the beginning and 128.3 MB in the end (delta: -44.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,308 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.51 ms. Allocated memory is still 135.8 MB. Free memory was 83.3 MB in the beginning and 73.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,310 INFO L168 Benchmark]: Boogie Preprocessor took 114.14 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 73.7 MB in the beginning and 174.5 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,311 INFO L168 Benchmark]: RCFGBuilder took 270.63 ms. Allocated memory is still 197.1 MB. Free memory was 174.5 MB in the beginning and 159.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,312 INFO L168 Benchmark]: TraceAbstraction took 643.90 ms. Allocated memory is still 197.1 MB. Free memory was 159.9 MB in the beginning and 128.3 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:31,316 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.51 ms. Allocated memory is still 135.8 MB. Free memory was 83.3 MB in the beginning and 73.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.14 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 73.7 MB in the beginning and 174.5 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.63 ms. Allocated memory is still 197.1 MB. Free memory was 174.5 MB in the beginning and 159.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 643.90 ms. Allocated memory is still 197.1 MB. Free memory was 159.9 MB in the beginning and 128.3 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 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: 16]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 1 SDslu, 33 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 11 LocationsWithAnnotation, 16 PreInvPairs, 20 NumberOfFragments, 15 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 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...