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/loop-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:08:43,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:08:43,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:08:43,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:08:43,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:08:43,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:08:43,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:08:43,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:08:43,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:08:43,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:08:43,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:08:43,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:08:43,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:08:43,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:08:43,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:08:43,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:08:43,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:08:43,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:08:43,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:08:43,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:08:43,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:08:43,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:08:43,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:08:43,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:08:43,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:08:43,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:08:43,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:08:43,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:08:43,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:08:43,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:08:43,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:08:43,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:08:43,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:08:43,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:08:43,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:08:43,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:08:43,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:08:43,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:08:43,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:08:43,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:08:43,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:08:43,327 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 11:08:43,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:08:43,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:08:43,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:08:43,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:08:43,343 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:08:43,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:08:43,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:08:43,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:08:43,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:08:43,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:08:43,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:08:43,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:08:43,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:08:43,345 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:08:43,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:08:43,346 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:08:43,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:08:43,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:08:43,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:08:43,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:08:43,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:08:43,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:08:43,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:08:43,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:08:43,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:08:43,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:08:43,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:08:43,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:08:43,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:08:43,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:08:43,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:08:43,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:08:43,399 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:08:43,399 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:08:43,400 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2019-10-02 11:08:43,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3b421db/4b96b9f4865846dd9e9a0fc0a6bcbde4/FLAG5ccc5fb91 [2019-10-02 11:08:43,906 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:08:43,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2019-10-02 11:08:43,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3b421db/4b96b9f4865846dd9e9a0fc0a6bcbde4/FLAG5ccc5fb91 [2019-10-02 11:08:44,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3b421db/4b96b9f4865846dd9e9a0fc0a6bcbde4 [2019-10-02 11:08:44,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:08:44,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:08:44,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:08:44,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:08:44,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:08:44,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce2b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44, skipping insertion in model container [2019-10-02 11:08:44,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,348 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:08:44,361 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:08:44,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:08:44,538 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:08:44,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:08:44,576 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:08:44,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44 WrapperNode [2019-10-02 11:08:44,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:08:44,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:08:44,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:08:44,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:08:44,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (1/1) ... [2019-10-02 11:08:44,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:08:44,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:08:44,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:08:44,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:08:44,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (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 11:08:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:08:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:08:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:08:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:08:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:08:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 11:08:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:08:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:08:44,958 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:08:44,958 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:08:44,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:08:44 BoogieIcfgContainer [2019-10-02 11:08:44,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:08:44,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:08:44,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:08:44,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:08:44,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:08:44" (1/3) ... [2019-10-02 11:08:44,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cb6097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:08:44, skipping insertion in model container [2019-10-02 11:08:44,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:08:44" (2/3) ... [2019-10-02 11:08:44,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cb6097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:08:44, skipping insertion in model container [2019-10-02 11:08:44,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:08:44" (3/3) ... [2019-10-02 11:08:44,985 INFO L109 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2019-10-02 11:08:45,013 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:08:45,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:08:45,076 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:08:45,118 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:08:45,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:08:45,119 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:08:45,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:08:45,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:08:45,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:08:45,119 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:08:45,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:08:45,119 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:08:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-02 11:08:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-02 11:08:45,139 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:08:45,140 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:08:45,141 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:08:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:08:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -267856937, now seen corresponding path program 1 times [2019-10-02 11:08:45,147 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:08:45,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:08:45,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:08:45,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,275 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 11:08:45,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:08:45,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:08:45,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:08:45,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:08:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:08:45,294 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-02 11:08:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:08:45,317 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2019-10-02 11:08:45,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:08:45,318 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-02 11:08:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:08:45,326 INFO L225 Difference]: With dead ends: 34 [2019-10-02 11:08:45,327 INFO L226 Difference]: Without dead ends: 14 [2019-10-02 11:08:45,330 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 11:08:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-02 11:08:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-02 11:08:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-02 11:08:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-02 11:08:45,369 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-02 11:08:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:08:45,369 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-02 11:08:45,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:08:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-02 11:08:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-02 11:08:45,370 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:08:45,370 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:08:45,371 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:08:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:08:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash -439631843, now seen corresponding path program 1 times [2019-10-02 11:08:45,372 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:08:45,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:08:45,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:08:45,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,426 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 11:08:45,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:08:45,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 11:08:45,428 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 11:08:45,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 11:08:45,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:08:45,429 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-10-02 11:08:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:08:45,455 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-10-02 11:08:45,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 11:08:45,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-02 11:08:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:08:45,458 INFO L225 Difference]: With dead ends: 22 [2019-10-02 11:08:45,458 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 11:08:45,459 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:08:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 11:08:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-02 11:08:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-02 11:08:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-02 11:08:45,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-10-02 11:08:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:08:45,464 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-02 11:08:45,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 11:08:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-02 11:08:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:08:45,465 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:08:45,465 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:08:45,466 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:08:45,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:08:45,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1874839487, now seen corresponding path program 1 times [2019-10-02 11:08:45,466 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:08:45,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:08:45,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:08:45,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:08:45,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:08:45,518 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:08:45,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 11:08:45,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:08:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:08:45,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:08:45,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-10-02 11:08:45,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:08:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:08:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:08:45,647 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2019-10-02 11:08:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:08:45,702 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-10-02 11:08:45,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 11:08:45,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-02 11:08:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:08:45,704 INFO L225 Difference]: With dead ends: 24 [2019-10-02 11:08:45,704 INFO L226 Difference]: Without dead ends: 18 [2019-10-02 11:08:45,705 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:08:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-02 11:08:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-10-02 11:08:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-02 11:08:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-02 11:08:45,712 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2019-10-02 11:08:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:08:45,712 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-02 11:08:45,712 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:08:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-02 11:08:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 11:08:45,714 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:08:45,715 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:08:45,715 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:08:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:08:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728289, now seen corresponding path program 2 times [2019-10-02 11:08:45,716 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:08:45,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:08:45,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:08:45,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:08:45,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:08:45,804 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:08:45,825 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:08:45,845 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 11:08:45,846 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:08:45,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 11:08:45,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:08:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:08:45,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:08:45,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-10-02 11:08:45,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 11:08:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 11:08:45,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-02 11:08:45,868 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2019-10-02 11:08:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:08:45,893 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-10-02 11:08:45,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:08:45,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-02 11:08:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:08:45,895 INFO L225 Difference]: With dead ends: 26 [2019-10-02 11:08:45,895 INFO L226 Difference]: Without dead ends: 20 [2019-10-02 11:08:45,896 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-02 11:08:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-02 11:08:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-10-02 11:08:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-02 11:08:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-02 11:08:45,900 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2019-10-02 11:08:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:08:45,901 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-02 11:08:45,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 11:08:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-02 11:08:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 11:08:45,902 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:08:45,902 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:08:45,902 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:08:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:08:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 676582787, now seen corresponding path program 3 times [2019-10-02 11:08:45,903 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:08:45,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:08:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:08:45,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:08:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:08:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:08:45,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:08:45,980 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:08:46,011 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 11:08:46,037 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-02 11:08:46,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:08:46,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 11:08:46,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:08:46,098 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-10-02 11:08:46,099 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:08:46,108 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:08:46,109 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:08:46,109 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-10-02 11:08:46,215 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:08:46,216 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2019-10-02 11:08:46,217 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-02 11:08:46,234 INFO L567 ElimStorePlain]: treesize reduction 11, result has 47.6 percent of original size [2019-10-02 11:08:46,235 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:08:46,235 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:27, output treesize:7 [2019-10-02 11:08:46,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:08:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 11:08:46,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:08:46,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2019-10-02 11:08:46,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 11:08:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 11:08:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-02 11:08:46,293 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2019-10-02 11:08:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:08:48,655 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-02 11:08:48,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 11:08:48,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-10-02 11:08:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:08:48,656 INFO L225 Difference]: With dead ends: 26 [2019-10-02 11:08:48,656 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:08:48,657 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2019-10-02 11:08:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:08:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:08:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:08:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:08:48,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-02 11:08:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:08:48,659 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:08:48,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 11:08:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:08:48,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:08:48,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:08:48,723 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:08:48,723 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:08:48,723 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:08:48,724 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:08:48,724 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:08:48,724 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:08:48,724 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:08:48,724 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2019-10-02 11:08:48,724 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2019-10-02 11:08:48,725 INFO L439 ceAbstractionStarter]: At program point L18(line 18) the Hoare annotation is: (and (<= 1023 |main_#t~mem1|) (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))) (<= 1023 v_main_~i~0_10))) (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (<= main_~i~0 (+ v_main_~i~0_10 1)) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))))) (< |main_#t~mem1| 1024)) [2019-10-02 11:08:48,725 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-10-02 11:08:48,725 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2019-10-02 11:08:48,725 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-02 11:08:48,725 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (<= main_~i~0 (+ v_main_~i~0_10 1)) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))))) (= main_~i~0 0)) [2019-10-02 11:08:48,725 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-10-02 11:08:48,726 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:08:48,726 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:08:48,726 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:08:48,726 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:08:48,726 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:08:48,726 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:08:48,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,737 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-02 11:08:48,742 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,743 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,743 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,743 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,743 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-02 11:08:48,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:08:48 BoogieIcfgContainer [2019-10-02 11:08:48,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:08:48,748 INFO L168 Benchmark]: Toolchain (without parser) took 4412.67 ms. Allocated memory was 131.6 MB in the beginning and 221.2 MB in the end (delta: 89.7 MB). Free memory was 87.2 MB in the beginning and 153.6 MB in the end (delta: -66.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,749 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 131.6 MB. Free memory was 105.9 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.45 ms. Allocated memory is still 131.6 MB. Free memory was 86.9 MB in the beginning and 77.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,751 INFO L168 Benchmark]: Boogie Preprocessor took 125.21 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 77.3 MB in the beginning and 175.9 MB in the end (delta: -98.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,752 INFO L168 Benchmark]: RCFGBuilder took 257.00 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 163.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,753 INFO L168 Benchmark]: TraceAbstraction took 3778.31 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 162.4 MB in the beginning and 153.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2019-10-02 11:08:48,758 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 131.6 MB. Free memory was 105.9 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.45 ms. Allocated memory is still 131.6 MB. Free memory was 86.9 MB in the beginning and 77.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.21 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 77.3 MB in the beginning and 175.9 MB in the end (delta: -98.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.00 ms. Allocated memory is still 199.8 MB. Free memory was 175.9 MB in the beginning and 163.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3778.31 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 162.4 MB in the beginning and 153.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 14]: Loop Invariant [2019-10-02 11:08:48,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,770 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-02 11:08:48,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2019-10-02 11:08:48,771 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (\exists v_main_~i~0_10 : int :: (v_main_~i~0_10 < 1024 && i <= v_main_~i~0_10 + 1) && v_main_~i~0_10 == unknown-#memory_int-unknown[A][4 * v_main_~i~0_10 + A]) || i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 11 SDslu, 109 SDs, 0 SdLazy, 80 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 77 HoareAnnotationTreeSize, 12 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 120 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 112 ConstructedInterpolants, 2 QuantifiedInterpolants, 3378 SizeOfPredicates, 8 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...