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 0.1.24-673a906-m [2019-10-02 11:29:47,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:29:47,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:29:47,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:29:47,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:29:47,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:29:47,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:29:47,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:29:47,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:29:47,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:29:47,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:29:47,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:29:47,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:29:47,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:29:47,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:29:47,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:29:47,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:29:47,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:29:47,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:29:47,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:29:47,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:29:47,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:29:47,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:29:47,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:29:47,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:29:47,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:29:47,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:29:47,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:29:47,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:29:47,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:29:47,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:29:47,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:29:47,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:29:47,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:29:47,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:29:47,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:29:47,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:29:47,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:29:47,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:29:47,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:29:47,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:29:47,318 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 [2019-10-02 11:29:47,334 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:29:47,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:29:47,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:29:47,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:29:47,336 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:29:47,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:29:47,337 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:29:47,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:29:47,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:29:47,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:29:47,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:29:47,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:29:47,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:29:47,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:29:47,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:29:47,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:29:47,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:29:47,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:29:47,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:29:47,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:29:47,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:29:47,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:29:47,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:29:47,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:29:47,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:29:47,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:29:47,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:29:47,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:29:47,399 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:29:47,402 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2019-10-02 11:29:47,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dd5723d/4d925072edf04d45b9bfd178ea8a63d7/FLAG5ace51f2c [2019-10-02 11:29:47,926 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:29:47,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2019-10-02 11:29:47,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dd5723d/4d925072edf04d45b9bfd178ea8a63d7/FLAG5ace51f2c [2019-10-02 11:29:48,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dd5723d/4d925072edf04d45b9bfd178ea8a63d7 [2019-10-02 11:29:48,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:29:48,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:29:48,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:29:48,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:29:48,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:29:48,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487d0c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48, skipping insertion in model container [2019-10-02 11:29:48,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,317 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:29:48,339 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:29:48,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:29:48,509 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:29:48,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:29:48,543 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:29:48,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48 WrapperNode [2019-10-02 11:29:48,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:29:48,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:29:48,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:29:48,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:29:48,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (1/1) ... [2019-10-02 11:29:48,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:29:48,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:29:48,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:29:48,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:29:48,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (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 [2019-10-02 11:29:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:29:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:29:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:29:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-02 11:29:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:29:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:29:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:29:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:29:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:29:48,971 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:29:48,972 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 11:29:48,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:29:48 BoogieIcfgContainer [2019-10-02 11:29:48,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:29:48,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:29:48,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:29:48,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:29:48,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:29:48" (1/3) ... [2019-10-02 11:29:48,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102a82f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:29:48, skipping insertion in model container [2019-10-02 11:29:48,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:29:48" (2/3) ... [2019-10-02 11:29:48,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102a82f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:29:48, skipping insertion in model container [2019-10-02 11:29:48,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:29:48" (3/3) ... [2019-10-02 11:29:49,001 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2019-10-02 11:29:49,021 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:29:49,029 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:29:49,056 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:29:49,085 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:29:49,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:29:49,085 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:29:49,085 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:29:49,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:29:49,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:29:49,086 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:29:49,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:29:49,086 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:29:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-02 11:29:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:29:49,109 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:29:49,110 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:29:49,112 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:29:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:29:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1886719170, now seen corresponding path program 1 times [2019-10-02 11:29:49,118 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:29:49,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:29:49,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:49,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:29:49,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:29:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:29:49,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:29:49,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:29:49,251 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:29:49,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:29:49,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:29:49,265 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-10-02 11:29:49,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:29:49,294 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2019-10-02 11:29:49,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:29:49,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-02 11:29:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:29:49,310 INFO L225 Difference]: With dead ends: 51 [2019-10-02 11:29:49,310 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 11:29:49,316 INFO L640 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 [2019-10-02 11:29:49,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 11:29:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-02 11:29:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-02 11:29:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-02 11:29:49,376 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-10-02 11:29:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:29:49,378 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-02 11:29:49,379 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:29:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-02 11:29:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:29:49,381 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:29:49,382 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:29:49,383 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:29:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:29:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1883025086, now seen corresponding path program 1 times [2019-10-02 11:29:49,385 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:29:49,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:29:49,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:49,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:29:49,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:29:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:29:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:29:49,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:29:49,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 11:29:49,546 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:29:49,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:29:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:29:49,549 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2019-10-02 11:29:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:29:49,612 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-02 11:29:49,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:29:49,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-02 11:29:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:29:49,613 INFO L225 Difference]: With dead ends: 16 [2019-10-02 11:29:49,613 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:29:49,616 INFO L640 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 [2019-10-02 11:29:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:29:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:29:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:29:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:29:49,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-02 11:29:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:29:49,618 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:29:49,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:29:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:29:49,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:29:49,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:29:49,686 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-02 11:29:49,686 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:29:49,687 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2019-10-02 11:29:49,687 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-02 11:29:49,687 INFO L443 ceAbstractionStarter]: For program point L17(lines 11 33) no Hoare annotation was computed. [2019-10-02 11:29:49,687 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2019-10-02 11:29:49,687 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 11 33) no Hoare annotation was computed. [2019-10-02 11:29:49,688 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 11 33) the Hoare annotation is: true [2019-10-02 11:29:49,688 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 31) no Hoare annotation was computed. [2019-10-02 11:29:49,688 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 22 32) the Hoare annotation is: true [2019-10-02 11:29:49,688 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-02 11:29:49,689 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 11 33) no Hoare annotation was computed. [2019-10-02 11:29:49,689 INFO L439 ceAbstractionStarter]: At program point L16-2(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2019-10-02 11:29:49,689 INFO L439 ceAbstractionStarter]: At program point L16-3(line 16) the Hoare annotation is: (<= 1 f_~z~0) [2019-10-02 11:29:49,690 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:29:49,690 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:29:49,690 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:29:49,690 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:29:49,690 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 34 42) the Hoare annotation is: true [2019-10-02 11:29:49,691 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 34 42) no Hoare annotation was computed. [2019-10-02 11:29:49,691 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 34 42) no Hoare annotation was computed. [2019-10-02 11:29:49,691 INFO L446 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2019-10-02 11:29:49,691 INFO L443 ceAbstractionStarter]: For program point L39-1(lines 36 40) no Hoare annotation was computed. [2019-10-02 11:29:49,691 INFO L446 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: true [2019-10-02 11:29:49,692 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2019-10-02 11:29:49,692 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:29:49,692 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:29:49,692 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:29:49,693 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:29:49,693 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:29:49,693 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:29:49,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:29:49 BoogieIcfgContainer [2019-10-02 11:29:49,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:29:49,712 INFO L168 Benchmark]: Toolchain (without parser) took 1410.53 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 86.3 MB in the beginning and 128.5 MB in the end (delta: -42.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,713 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.29 ms. Allocated memory is still 138.4 MB. Free memory was 86.1 MB in the beginning and 76.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,716 INFO L168 Benchmark]: Boogie Preprocessor took 118.77 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.3 MB in the beginning and 176.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,717 INFO L168 Benchmark]: RCFGBuilder took 315.34 ms. Allocated memory is still 198.7 MB. Free memory was 176.1 MB in the beginning and 161.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,719 INFO L168 Benchmark]: TraceAbstraction took 724.74 ms. Allocated memory is still 198.7 MB. Free memory was 161.0 MB in the beginning and 128.5 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2019-10-02 11:29:49,723 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.29 ms. Allocated memory is still 138.4 MB. Free memory was 86.1 MB in the beginning and 76.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.77 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.3 MB in the beginning and 176.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.34 ms. Allocated memory is still 198.7 MB. Free memory was 176.1 MB in the beginning and 161.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 724.74 ms. Allocated memory is still 198.7 MB. Free memory was 161.0 MB in the beginning and 128.5 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: 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, 0.6s 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...