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/sum01_bug02_sum01_bug02_base.case.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 11:29:58,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 11:29:58,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 11:29:58,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 11:29:58,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 11:29:58,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 11:29:58,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 11:29:58,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 11:29:58,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 11:29:58,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 11:29:58,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 11:29:58,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 11:29:58,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 11:29:58,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 11:29:58,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 11:29:58,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 11:29:58,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 11:29:58,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 11:29:58,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 11:29:58,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 11:29:58,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 11:29:58,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 11:29:58,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 11:29:58,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 11:29:58,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-05 11:29:58,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-05 11:29:58,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-05 11:29:58,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-05 11:29:58,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-05 11:29:58,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-05 11:29:58,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 11:29:58,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 11:29:58,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 11:29:58,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 11:29:58,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 11:29:58,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 11:29:58,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 11:29:58,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 11:29:58,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 11:29:58,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 11:29:58,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 11:29:58,561 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 [2019-09-05 11:29:58,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 11:29:58,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 11:29:58,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 11:29:58,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 11:29:58,581 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 11:29:58,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 11:29:58,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 11:29:58,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 11:29:58,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 11:29:58,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 11:29:58,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 11:29:58,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 11:29:58,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 11:29:58,585 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 11:29:58,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 11:29:58,585 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 11:29:58,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 11:29:58,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 11:29:58,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 11:29:58,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 11:29:58,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 11:29:58,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 11:29:58,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 11:29:58,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 11:29:58,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 11:29:58,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 11:29:58,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 11:29:58,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 11:29:58,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 11:29:58,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 11:29:58,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 11:29:58,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 11:29:58,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 11:29:58,659 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 11:29:58,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2019-09-05 11:29:58,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7ffb383/b2a9aedf221b49b9a49a904bd9e1ed4c/FLAGba657d6f0 [2019-09-05 11:29:59,193 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 11:29:59,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2019-09-05 11:29:59,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7ffb383/b2a9aedf221b49b9a49a904bd9e1ed4c/FLAGba657d6f0 [2019-09-05 11:29:59,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7ffb383/b2a9aedf221b49b9a49a904bd9e1ed4c [2019-09-05 11:29:59,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 11:29:59,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 11:29:59,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 11:29:59,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 11:29:59,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 11:29:59,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:29:59,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3253068a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59, skipping insertion in model container [2019-09-05 11:29:59,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:29:59,600 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 11:29:59,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 11:29:59,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:29:59,869 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 11:29:59,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 11:29:59,909 INFO L192 MainTranslator]: Completed translation [2019-09-05 11:29:59,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59 WrapperNode [2019-09-05 11:29:59,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 11:29:59,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 11:29:59,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 11:29:59,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 11:30:00,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (1/1) ... [2019-09-05 11:30:00,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 11:30:00,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 11:30:00,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 11:30:00,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 11:30:00,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (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 [2019-09-05 11:30:00,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 11:30:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 11:30:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 11:30:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 11:30:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 11:30:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 11:30:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 11:30:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 11:30:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 11:30:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 11:30:00,304 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 11:30:00,304 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 11:30:00,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:30:00 BoogieIcfgContainer [2019-09-05 11:30:00,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 11:30:00,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 11:30:00,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 11:30:00,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 11:30:00,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 11:29:59" (1/3) ... [2019-09-05 11:30:00,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278958bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:30:00, skipping insertion in model container [2019-09-05 11:30:00,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 11:29:59" (2/3) ... [2019-09-05 11:30:00,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278958bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 11:30:00, skipping insertion in model container [2019-09-05 11:30:00,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 11:30:00" (3/3) ... [2019-09-05 11:30:00,313 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2019-09-05 11:30:00,323 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 11:30:00,330 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 11:30:00,354 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 11:30:00,394 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 11:30:00,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 11:30:00,395 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 11:30:00,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 11:30:00,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 11:30:00,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 11:30:00,396 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 11:30:00,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 11:30:00,397 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 11:30:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-05 11:30:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 11:30:00,442 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:00,443 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:00,446 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2019-09-05 11:30:00,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:00,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:00,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:00,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:00,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:30:00,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 11:30:00,584 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 11:30:00,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 11:30:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 11:30:00,602 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-05 11:30:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:30:00,625 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-09-05 11:30:00,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 11:30:00,626 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 11:30:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:30:00,635 INFO L225 Difference]: With dead ends: 30 [2019-09-05 11:30:00,635 INFO L226 Difference]: Without dead ends: 13 [2019-09-05 11:30:00,638 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 [2019-09-05 11:30:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-05 11:30:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-05 11:30:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-05 11:30:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-09-05 11:30:00,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-09-05 11:30:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:30:00,671 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-09-05 11:30:00,672 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 11:30:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-09-05 11:30:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 11:30:00,672 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:00,673 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:00,673 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2019-09-05 11:30:00,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:00,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:00,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:00,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:00,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 11:30:00,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 11:30:00,775 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 11:30:00,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 11:30:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 11:30:00,776 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-09-05 11:30:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:30:00,825 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-05 11:30:00,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 11:30:00,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 11:30:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:30:00,828 INFO L225 Difference]: With dead ends: 19 [2019-09-05 11:30:00,828 INFO L226 Difference]: Without dead ends: 14 [2019-09-05 11:30:00,829 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 11:30:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-05 11:30:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-05 11:30:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-05 11:30:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-09-05 11:30:00,834 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2019-09-05 11:30:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:30:00,835 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-09-05 11:30:00,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 11:30:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-09-05 11:30:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-05 11:30:00,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:00,836 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:00,836 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 137668885, now seen corresponding path program 1 times [2019-09-05 11:30:00,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:00,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:00,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:00,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:01,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:30:01,029 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 [2019-09-05 11:30:01,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:01,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-05 11:30:01,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:30:01,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:30:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:01,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:30:01,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-05 11:30:01,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-05 11:30:01,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-05 11:30:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-05 11:30:01,227 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 14 states. [2019-09-05 11:30:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:30:01,396 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-09-05 11:30:01,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-05 11:30:01,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-09-05 11:30:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:30:01,400 INFO L225 Difference]: With dead ends: 32 [2019-09-05 11:30:01,400 INFO L226 Difference]: Without dead ends: 20 [2019-09-05 11:30:01,401 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-09-05 11:30:01,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-05 11:30:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-05 11:30:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-05 11:30:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-05 11:30:01,411 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2019-09-05 11:30:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:30:01,412 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-05 11:30:01,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-05 11:30:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-05 11:30:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-05 11:30:01,413 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:01,414 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:01,414 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2110192267, now seen corresponding path program 1 times [2019-09-05 11:30:01,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:01,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:01,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:01,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:01,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:01,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:30:01,480 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 11:30:01,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:01,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-05 11:30:01,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:30:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:01,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:30:01,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-09-05 11:30:01,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 11:30:01,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 11:30:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:30:01,538 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2019-09-05 11:30:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:30:01,560 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-05 11:30:01,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 11:30:01,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-05 11:30:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:30:01,562 INFO L225 Difference]: With dead ends: 28 [2019-09-05 11:30:01,562 INFO L226 Difference]: Without dead ends: 20 [2019-09-05 11:30:01,563 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-05 11:30:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-05 11:30:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-05 11:30:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-05 11:30:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-05 11:30:01,581 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2019-09-05 11:30:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:30:01,581 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-05 11:30:01,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 11:30:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-05 11:30:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 11:30:01,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:01,583 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:01,583 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash 370288085, now seen corresponding path program 2 times [2019-09-05 11:30:01,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:01,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:01,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 11:30:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 11:30:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-05 11:30:01,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 11:30:01,760 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 [2019-09-05 11:30:01,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-05 11:30:01,788 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 11:30:01,788 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 11:30:01,789 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-05 11:30:01,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 11:30:01,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 11:30:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 11:30:02,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 11:30:02,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-05 11:30:02,006 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-05 11:30:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-05 11:30:02,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-09-05 11:30:02,007 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 19 states. [2019-09-05 11:30:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 11:30:02,387 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-09-05 11:30:02,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-05 11:30:02,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-09-05 11:30:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 11:30:02,389 INFO L225 Difference]: With dead ends: 38 [2019-09-05 11:30:02,389 INFO L226 Difference]: Without dead ends: 26 [2019-09-05 11:30:02,391 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2019-09-05 11:30:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-05 11:30:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-05 11:30:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-05 11:30:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-05 11:30:02,399 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2019-09-05 11:30:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 11:30:02,399 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-05 11:30:02,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-05 11:30:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-05 11:30:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-05 11:30:02,401 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 11:30:02,401 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 11:30:02,401 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 11:30:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 11:30:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 66146485, now seen corresponding path program 2 times [2019-09-05 11:30:02,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 11:30:02,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 11:30:02,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:02,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 11:30:02,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 11:30:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 11:30:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 11:30:02,485 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-05 11:30:02,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 11:30:02 BoogieIcfgContainer [2019-09-05 11:30:02,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 11:30:02,519 INFO L168 Benchmark]: Toolchain (without parser) took 2933.87 ms. Allocated memory was 139.5 MB in the beginning and 224.4 MB in the end (delta: 84.9 MB). Free memory was 87.2 MB in the beginning and 94.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2019-09-05 11:30:02,520 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 139.5 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 11:30:02,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 139.5 MB. Free memory was 87.2 MB in the beginning and 78.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-05 11:30:02,529 INFO L168 Benchmark]: Boogie Preprocessor took 149.48 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 78.0 MB in the beginning and 177.3 MB in the end (delta: -99.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-05 11:30:02,530 INFO L168 Benchmark]: RCFGBuilder took 244.05 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 166.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-05 11:30:02,532 INFO L168 Benchmark]: TraceAbstraction took 2208.68 ms. Allocated memory was 200.3 MB in the beginning and 224.4 MB in the end (delta: 24.1 MB). Free memory was 165.7 MB in the beginning and 94.0 MB in the end (delta: 71.7 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. [2019-09-05 11:30:02,542 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 139.5 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 139.5 MB. Free memory was 87.2 MB in the beginning and 78.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.48 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 78.0 MB in the beginning and 177.3 MB in the end (delta: -99.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 244.05 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 166.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2208.68 ms. Allocated memory was 200.3 MB in the beginning and 224.4 MB in the end (delta: 24.1 MB). Free memory was 165.7 MB in the beginning and 94.0 MB in the end (delta: 71.7 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=4, n=0] [L13] COND TRUE i<=n [L14] sn = sn + (2) VAL [i=1, n=2, n=4] [L15] COND FALSE !(i==4) VAL [i=1, n=2, n=4] [L13] i++ VAL [i=2, n=2, n=4] [L13] COND TRUE i<=n [L14] sn = sn + (2) VAL [i=2, n=4, n=4] [L15] COND FALSE !(i==4) VAL [i=2, n=4, n=4] [L13] i++ VAL [i=3, n=4, n=4] [L13] COND TRUE i<=n [L14] sn = sn + (2) VAL [i=3, n=4, n=6] [L15] COND FALSE !(i==4) VAL [i=3, n=6, n=4] [L13] i++ VAL [i=4, n=6, n=4] [L13] COND TRUE i<=n [L14] sn = sn + (2) VAL [i=4, n=4, n=8] [L15] COND TRUE i==4 [L15] sn=-10 VAL [i=4, n=4, n=-10] [L13] i++ VAL [i=5, n=-10, n=4] [L13] COND FALSE !(i<=n) VAL [i=5, n=4, n=-10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 2.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 18 SDslu, 174 SDs, 0 SdLazy, 261 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=5, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 7806 SizeOfPredicates, 7 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 11/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...