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/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:28:56,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:28:56,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:28:56,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:28:56,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:28:56,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:28:56,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:28:56,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:28:56,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:28:56,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:28:56,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:28:56,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:28:56,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:28:56,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:28:56,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:28:56,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:28:56,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:28:56,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:28:56,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:28:56,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:28:56,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:28:56,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:28:56,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:28:56,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:28:56,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 02:28:56,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 02:28:56,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 02:28:56,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 02:28:56,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 02:28:56,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 02:28:56,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 02:28:56,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 02:28:56,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 02:28:56,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:28:56,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:28:56,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:28:56,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 02:28:56,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:28:56,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:28:56,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:28:56,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:28:56,549 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:28:56,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:28:56,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:28:56,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:28:56,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:28:56,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:28:56,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:28:56,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:28:56,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:28:56,551 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:28:56,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:28:56,552 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:28:56,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:28:56,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:28:56,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:28:56,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:28:56,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:28:56,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:28:56,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:28:56,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:28:56,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:28:56,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:28:56,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:28:56,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:28:56,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:28:56,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:28:56,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:28:56,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:28:56,619 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:28:56,620 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:28:56,620 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-08 02:28:56,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec2bdd2/e48d5536cfd5473a80d4fa1719d15844/FLAG5f2054611 [2019-09-08 02:28:57,136 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:28:57,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-08 02:28:57,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec2bdd2/e48d5536cfd5473a80d4fa1719d15844/FLAG5f2054611 [2019-09-08 02:28:57,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec2bdd2/e48d5536cfd5473a80d4fa1719d15844 [2019-09-08 02:28:57,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:28:57,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:28:57,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:28:57,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:28:57,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:28:57,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6108166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57, skipping insertion in model container [2019-09-08 02:28:57,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,600 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:28:57,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:28:57,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:28:57,813 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:28:57,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:28:57,927 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:28:57,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57 WrapperNode [2019-09-08 02:28:57,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:28:57,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:28:57,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:28:57,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:28:57,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... [2019-09-08 02:28:57,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:28:57,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:28:57,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:28:57,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:28:57,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:28:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:28:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:28:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 02:28:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2019-09-08 02:28:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2019-09-08 02:28:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:28:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 02:28:58,298 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:28:58,298 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 02:28:58,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:28:58 BoogieIcfgContainer [2019-09-08 02:28:58,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:28:58,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:28:58,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:28:58,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:28:58,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:28:57" (1/3) ... [2019-09-08 02:28:58,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442628b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:28:58, skipping insertion in model container [2019-09-08 02:28:58,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:28:57" (2/3) ... [2019-09-08 02:28:58,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442628b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:28:58, skipping insertion in model container [2019-09-08 02:28:58,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:28:58" (3/3) ... [2019-09-08 02:28:58,307 INFO L109 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2019-09-08 02:28:58,321 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:28:58,328 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:28:58,371 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:28:58,396 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:28:58,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:28:58,397 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:28:58,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:28:58,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:28:58,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:28:58,397 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:28:58,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:28:58,398 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:28:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-08 02:28:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 02:28:58,418 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:28:58,419 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:28:58,420 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:28:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:28:58,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1860043698, now seen corresponding path program 1 times [2019-09-08 02:28:58,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:28:58,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:28:58,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:58,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:28:58,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:28:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:28:58,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:28:58,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 02:28:58,613 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 02:28:58,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 02:28:58,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:28:58,631 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-08 02:28:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:28:58,650 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-09-08 02:28:58,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 02:28:58,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-08 02:28:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:28:58,660 INFO L225 Difference]: With dead ends: 44 [2019-09-08 02:28:58,660 INFO L226 Difference]: Without dead ends: 21 [2019-09-08 02:28:58,665 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:28:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-08 02:28:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-08 02:28:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-08 02:28:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-08 02:28:58,703 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-09-08 02:28:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:28:58,704 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-08 02:28:58,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 02:28:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-08 02:28:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 02:28:58,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:28:58,708 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:28:58,708 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:28:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:28:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash 916881159, now seen corresponding path program 1 times [2019-09-08 02:28:58,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:28:58,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:28:58,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:58,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:28:58,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:28:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:28:58,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:28:58,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 02:28:58,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:28:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:28:58,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:28:58,925 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2019-09-08 02:28:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:28:58,973 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-08 02:28:58,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 02:28:58,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-08 02:28:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:28:58,975 INFO L225 Difference]: With dead ends: 29 [2019-09-08 02:28:58,975 INFO L226 Difference]: Without dead ends: 21 [2019-09-08 02:28:58,976 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 02:28:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-08 02:28:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-08 02:28:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-08 02:28:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-08 02:28:58,981 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2019-09-08 02:28:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:28:58,982 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-08 02:28:58,982 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:28:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-08 02:28:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 02:28:58,983 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:28:58,983 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:28:58,983 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:28:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:28:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1635275802, now seen corresponding path program 1 times [2019-09-08 02:28:58,984 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:28:58,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:28:58,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:58,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:28:58,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:28:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:28:59,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:28:59,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:28:59,170 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:28:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:28:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:28:59,172 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-08 02:28:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:28:59,265 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-09-08 02:28:59,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 02:28:59,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-08 02:28:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:28:59,268 INFO L225 Difference]: With dead ends: 33 [2019-09-08 02:28:59,270 INFO L226 Difference]: Without dead ends: 24 [2019-09-08 02:28:59,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:28:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-08 02:28:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-08 02:28:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-08 02:28:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-08 02:28:59,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2019-09-08 02:28:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:28:59,279 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-08 02:28:59,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:28:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-08 02:28:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 02:28:59,280 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:28:59,281 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:28:59,281 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:28:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:28:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash 636491705, now seen corresponding path program 1 times [2019-09-08 02:28:59,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:28:59,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:28:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:59,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:28:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:28:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:28:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 02:28:59,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:28:59,598 INFO L223 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:28:59,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:28:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:28:59,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 02:28:59,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:28:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:28:59,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:28:59,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-08 02:28:59,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 02:28:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 02:28:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-08 02:28:59,837 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 11 states. [2019-09-08 02:29:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:29:00,515 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-09-08 02:29:00,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 02:29:00,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-09-08 02:29:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:29:00,519 INFO L225 Difference]: With dead ends: 43 [2019-09-08 02:29:00,520 INFO L226 Difference]: Without dead ends: 30 [2019-09-08 02:29:00,521 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2019-09-08 02:29:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-08 02:29:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-09-08 02:29:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 02:29:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-09-08 02:29:00,535 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2019-09-08 02:29:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:29:00,536 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-09-08 02:29:00,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 02:29:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-09-08 02:29:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 02:29:00,538 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:29:00,538 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:29:00,538 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:29:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:29:00,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1625384636, now seen corresponding path program 1 times [2019-09-08 02:29:00,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:29:00,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:29:00,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:29:00,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:29:00,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:29:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:29:01,134 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 39 [2019-09-08 02:29:01,868 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2019-09-08 02:29:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:29:01,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:29:01,879 INFO L223 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) [2019-09-08 02:29:01,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:29:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:29:01,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-08 02:29:01,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:29:01,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:08,709 WARN L188 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 30 DAG size of output: 13 [2019-09-08 02:29:08,767 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 56 treesize of output 52 [2019-09-08 02:29:08,768 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:29:08,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:29:08,784 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 1 [2019-09-08 02:29:08,784 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:29:08,867 INFO L567 ElimStorePlain]: treesize reduction 268, result has 10.7 percent of original size [2019-09-08 02:29:08,867 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_6| vanished before elimination [2019-09-08 02:29:08,868 INFO L464 ElimStorePlain]: Eliminatee v_prenex_4 vanished before elimination [2019-09-08 02:29:08,868 INFO L464 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2019-09-08 02:29:08,869 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:29:08,870 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:359, output treesize:32 [2019-09-08 02:29:09,211 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-08 02:29:10,789 WARN L188 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 47 [2019-09-08 02:29:10,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:10,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:10,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:10,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:10,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:13,433 WARN L188 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-08 02:29:13,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:15,806 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-09-08 02:29:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:29:15,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:29:15,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2019-09-08 02:29:15,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 02:29:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 02:29:15,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=396, Unknown=2, NotChecked=0, Total=462 [2019-09-08 02:29:15,919 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 22 states. [2019-09-08 02:29:16,461 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-09-08 02:29:20,614 WARN L188 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-08 02:29:29,662 WARN L188 SmtUtils]: Spent 8.95 s on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2019-09-08 02:29:33,031 WARN L188 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 125 DAG size of output: 88 [2019-09-08 02:29:35,455 WARN L188 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-09-08 02:29:38,178 WARN L188 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2019-09-08 02:29:39,849 WARN L188 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-08 02:29:40,897 WARN L188 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2019-09-08 02:29:46,915 WARN L188 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-08 02:29:47,779 WARN L188 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-08 02:29:49,923 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-08 02:29:50,861 WARN L188 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-08 02:29:51,068 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2019-09-08 02:29:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:29:51,247 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-09-08 02:29:51,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 02:29:51,249 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26 [2019-09-08 02:29:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:29:51,250 INFO L225 Difference]: With dead ends: 63 [2019-09-08 02:29:51,250 INFO L226 Difference]: Without dead ends: 31 [2019-09-08 02:29:51,253 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=287, Invalid=1351, Unknown=2, NotChecked=0, Total=1640 [2019-09-08 02:29:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-08 02:29:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-09-08 02:29:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 02:29:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-09-08 02:29:51,258 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2019-09-08 02:29:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:29:51,259 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-09-08 02:29:51,259 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 02:29:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-09-08 02:29:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-08 02:29:51,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:29:51,260 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:29:51,260 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:29:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:29:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash -854746409, now seen corresponding path program 2 times [2019-09-08 02:29:51,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:29:51,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:29:51,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:29:51,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:29:51,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:29:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:29:51,752 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 36 [2019-09-08 02:29:52,213 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2019-09-08 02:29:52,942 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 37 [2019-09-08 02:29:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:29:52,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:29:52,949 INFO L223 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 [2019-09-08 02:29:52,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 02:29:53,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 02:29:53,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 02:29:53,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 48 conjunts are in the unsatisfiable core [2019-09-08 02:29:53,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:29:53,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:29:55,247 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-08 02:29:55,247 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:29:57,300 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2019-09-08 02:29:57,300 INFO L567 ElimStorePlain]: treesize reduction 238, result has 11.5 percent of original size [2019-09-08 02:29:57,301 INFO L464 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2019-09-08 02:29:57,304 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 21 treesize of output 17 [2019-09-08 02:29:57,304 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:29:57,312 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:29:57,313 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-09-08 02:29:57,313 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:29:57,314 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:329, output treesize:27 [2019-09-08 02:29:59,301 WARN L188 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 49 [2019-09-08 02:30:04,894 WARN L188 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 02:30:07,140 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-08 02:30:07,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:07,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:07,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:07,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:07,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:08,149 WARN L188 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-08 02:30:10,134 WARN L188 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-09-08 02:30:16,966 WARN L188 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2019-09-08 02:30:17,616 WARN L188 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-09-08 02:30:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:30:17,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:30:17,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 30 [2019-09-08 02:30:17,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-08 02:30:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-08 02:30:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=754, Unknown=3, NotChecked=0, Total=870 [2019-09-08 02:30:17,756 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 30 states. [2019-09-08 02:30:20,243 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 47 [2019-09-08 02:30:22,415 WARN L188 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 56 [2019-09-08 02:30:24,810 WARN L188 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-08 02:30:27,814 WARN L188 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2019-09-08 02:30:28,560 WARN L188 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-09-08 02:30:28,795 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 53 [2019-09-08 02:30:32,098 WARN L188 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2019-09-08 02:30:34,403 WARN L188 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2019-09-08 02:30:36,722 WARN L188 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-08 02:30:38,443 WARN L188 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2019-09-08 02:30:40,087 WARN L188 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-08 02:30:44,577 WARN L188 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-08 02:30:44,879 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2019-09-08 02:30:45,713 WARN L188 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-09-08 02:30:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:30:45,989 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-09-08 02:30:45,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 02:30:45,991 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2019-09-08 02:30:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:30:45,992 INFO L225 Difference]: With dead ends: 64 [2019-09-08 02:30:45,992 INFO L226 Difference]: Without dead ends: 34 [2019-09-08 02:30:45,994 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=343, Invalid=2104, Unknown=3, NotChecked=0, Total=2450 [2019-09-08 02:30:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-08 02:30:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-09-08 02:30:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-08 02:30:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-09-08 02:30:46,002 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2019-09-08 02:30:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:30:46,002 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-09-08 02:30:46,002 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-08 02:30:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-09-08 02:30:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-08 02:30:46,004 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:30:46,004 INFO L399 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:30:46,004 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:30:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:30:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash 628477028, now seen corresponding path program 3 times [2019-09-08 02:30:46,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:30:46,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:30:46,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:46,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 02:30:46,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:30:48,573 WARN L188 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 225 DAG size of output: 36 [2019-09-08 02:30:49,033 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 43 [2019-09-08 02:30:49,171 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-08 02:30:49,316 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 02:30:50,121 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 46 [2019-09-08 02:30:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:30:50,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:30:50,130 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 02:30:50,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:30:53,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-09-08 02:30:53,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 02:30:53,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-08 02:30:53,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:30:53,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:30:53,869 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-08 02:30:53,870 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:30:53,875 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-08 02:30:53,875 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:30:53,946 INFO L567 ElimStorePlain]: treesize reduction 232, result has 15.9 percent of original size [2019-09-08 02:30:53,950 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 21 treesize of output 17 [2019-09-08 02:30:53,950 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-08 02:30:53,966 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:30:53,966 INFO L464 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2019-09-08 02:30:53,966 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_8| vanished before elimination [2019-09-08 02:30:53,967 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:30:53,967 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:407, output treesize:40 [2019-09-08 02:30:54,831 WARN L188 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-08 02:30:55,700 WARN L188 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 02:30:57,833 WARN L188 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 52 [2019-09-08 02:31:02,783 WARN L188 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-08 02:31:02,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:31:02,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:31:02,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:31:02,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:31:02,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:31:04,220 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-08 02:31:04,756 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-09-08 02:31:05,130 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-08 02:31:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:31:05,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:31:05,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2019-09-08 02:31:05,444 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-08 02:31:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-08 02:31:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2019-09-08 02:31:05,445 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 32 states. [2019-09-08 02:31:09,829 WARN L188 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-09-08 02:31:11,000 WARN L188 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 02:31:11,498 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-08 02:31:11,822 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2019-09-08 02:31:13,046 WARN L188 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 02:31:13,562 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2019-09-08 02:31:13,796 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-09-08 02:31:16,115 WARN L188 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-09-08 02:31:17,072 WARN L188 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2019-09-08 02:31:19,885 WARN L188 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2019-09-08 02:31:21,622 WARN L188 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2019-09-08 02:31:21,985 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 72 [2019-09-08 02:31:22,287 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2019-09-08 02:31:22,502 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2019-09-08 02:31:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:31:22,644 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2019-09-08 02:31:22,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-08 02:31:22,644 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2019-09-08 02:31:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:31:22,646 INFO L225 Difference]: With dead ends: 54 [2019-09-08 02:31:22,646 INFO L226 Difference]: Without dead ends: 37 [2019-09-08 02:31:22,648 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=283, Invalid=2069, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 02:31:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-08 02:31:22,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-09-08 02:31:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-08 02:31:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-08 02:31:22,655 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2019-09-08 02:31:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:31:22,656 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-08 02:31:22,656 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-08 02:31:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-08 02:31:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-08 02:31:22,657 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:31:22,657 INFO L399 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:31:22,657 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:31:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:31:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash 714347447, now seen corresponding path program 4 times [2019-09-08 02:31:22,658 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:31:22,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:31:22,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:22,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 02:31:22,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:31:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:31:22,764 ERROR L253 erpolLogProxyWrapper]: Interpolant 17 not inductive: (Check returned sat) [2019-09-08 02:31:22,826 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:969) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-08 02:31:22,834 INFO L168 Benchmark]: Toolchain (without parser) took 145251.89 ms. Allocated memory was 132.6 MB in the beginning and 308.8 MB in the end (delta: 176.2 MB). Free memory was 87.4 MB in the beginning and 184.5 MB in the end (delta: -97.2 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,834 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.65 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.2 MB in the beginning and 176.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,845 INFO L168 Benchmark]: Boogie Preprocessor took 46.29 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 174.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,846 INFO L168 Benchmark]: RCFGBuilder took 324.55 ms. Allocated memory is still 199.2 MB. Free memory was 174.4 MB in the beginning and 159.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,848 INFO L168 Benchmark]: TraceAbstraction took 144530.65 ms. Allocated memory was 199.2 MB in the beginning and 308.8 MB in the end (delta: 109.6 MB). Free memory was 159.1 MB in the beginning and 184.5 MB in the end (delta: -25.4 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2019-09-08 02:31:22,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.65 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.2 MB in the beginning and 176.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.29 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 174.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.55 ms. Allocated memory is still 199.2 MB. Free memory was 174.4 MB in the beginning and 159.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 144530.65 ms. Allocated memory was 199.2 MB in the beginning and 308.8 MB in the end (delta: 109.6 MB). Free memory was 159.1 MB in the beginning and 184.5 MB in the end (delta: -25.4 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:969) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...