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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 21:16:36,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:16:36,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:16:36,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:16:36,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:16:36,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:16:36,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:16:36,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:16:36,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:16:36,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:16:36,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:16:36,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 21:16:36,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 21:16:36,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 21:16:36,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 21:16:36,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 21:16:36,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 21:16:36,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 21:16:36,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 21:16:36,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 21:16:36,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 21:16:36,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 21:16:36,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 21:16:36,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 21:16:36,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 21:16:36,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:16:36,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:16:36,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:16:36,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:16:36,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:16:36,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:16:36,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:16:36,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:16:36,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:16:36,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:16:36,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:16:36,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 21:16:36,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:16:36,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:16:36,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:16:36,831 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:16:36,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:16:36,835 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:16:36,835 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:16:36,835 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:16:36,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:16:36,835 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:16:36,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:16:36,836 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:16:36,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:16:36,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:16:36,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:16:36,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:16:36,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:16:36,839 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:16:36,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:16:36,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:16:36,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:16:36,840 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:16:36,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:16:36,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:16:36,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:16:36,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:16:36,841 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:16:36,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:16:36,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:16:36,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:16:36,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:16:36,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:16:36,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:16:36,911 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:16:36,911 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:16:36,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-03 21:16:36,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5957edb77/0fc2443118a9451483aba54eed162db4/FLAG7520ee76c [2019-09-03 21:16:37,406 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:16:37,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-09-03 21:16:37,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5957edb77/0fc2443118a9451483aba54eed162db4/FLAG7520ee76c [2019-09-03 21:16:37,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5957edb77/0fc2443118a9451483aba54eed162db4 [2019-09-03 21:16:37,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:16:37,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:16:37,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:16:37,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:16:37,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:16:37,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:16:37" (1/1) ... [2019-09-03 21:16:37,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c661a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:37, skipping insertion in model container [2019-09-03 21:16:37,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:16:37" (1/1) ... [2019-09-03 21:16:37,838 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:16:37,854 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:16:38,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:16:38,018 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:16:38,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:16:38,046 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:16:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38 WrapperNode [2019-09-03 21:16:38,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:16:38,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:16:38,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:16:38,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:16:38,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... [2019-09-03 21:16:38,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:16:38,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:16:38,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:16:38,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:16:38,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:16:38,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:16:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:16:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:16:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:16:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:16:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 21:16:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:16:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:16:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:16:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:16:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:16:38,397 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:16:38,398 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 21:16:38,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:16:38 BoogieIcfgContainer [2019-09-03 21:16:38,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:16:38,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:16:38,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:16:38,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:16:38,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:16:37" (1/3) ... [2019-09-03 21:16:38,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163cdb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:16:38, skipping insertion in model container [2019-09-03 21:16:38,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:16:38" (2/3) ... [2019-09-03 21:16:38,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163cdb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:16:38, skipping insertion in model container [2019-09-03 21:16:38,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:16:38" (3/3) ... [2019-09-03 21:16:38,407 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-09-03 21:16:38,418 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:16:38,427 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:16:38,451 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:16:38,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:16:38,480 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:16:38,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:16:38,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:16:38,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:16:38,481 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:16:38,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:16:38,482 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:16:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-03 21:16:38,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:16:38,509 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:16:38,510 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:16:38,516 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:16:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:38,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-09-03 21:16:38,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:16:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:38,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:38,579 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:16:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:16:38,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:16:38,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 21:16:38,634 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:16:38,637 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 21:16:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 21:16:38,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:16:38,650 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-03 21:16:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:16:38,665 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-09-03 21:16:38,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 21:16:38,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 21:16:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:16:38,675 INFO L225 Difference]: With dead ends: 24 [2019-09-03 21:16:38,675 INFO L226 Difference]: Without dead ends: 19 [2019-09-03 21:16:38,677 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:16:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-03 21:16:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-03 21:16:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-03 21:16:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-09-03 21:16:38,718 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-09-03 21:16:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:16:38,718 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-09-03 21:16:38,719 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 21:16:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-09-03 21:16:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:16:38,719 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:16:38,720 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:16:38,720 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:16:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:38,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-09-03 21:16:38,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:16:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:38,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:38,722 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:16:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:16:38,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:16:38,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 21:16:38,933 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:16:38,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:16:38,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:16:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 21:16:38,936 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-09-03 21:16:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:16:39,031 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-09-03 21:16:39,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 21:16:39,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:16:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:16:39,033 INFO L225 Difference]: With dead ends: 23 [2019-09-03 21:16:39,033 INFO L226 Difference]: Without dead ends: 23 [2019-09-03 21:16:39,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 21:16:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-03 21:16:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-03 21:16:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-03 21:16:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-03 21:16:39,050 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-09-03 21:16:39,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:16:39,051 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-03 21:16:39,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:16:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-03 21:16:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 21:16:39,052 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:16:39,052 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:16:39,052 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:16:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-09-03 21:16:39,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:16:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:39,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:39,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:16:39,064 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:16:39,065 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:16:39,065 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:16:39,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:39,084 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:16:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:39,100 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-03 21:16:39,105 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47] [2019-09-03 21:16:39,142 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:16:39,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:16:39,241 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:16:39,243 INFO L272 AbstractInterpreter]: Visited 14 different actions 19 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 7. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 5 variables. [2019-09-03 21:16:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:39,248 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:16:39,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:16:39,250 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-03 21:16:39,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:39,268 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:16:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:39,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-03 21:16:39,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:16:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:16:39,401 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:16:39,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:16:39,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:16:39,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:16:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:16:39,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:16:39,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-03 21:16:39,552 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:16:39,552 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-03 21:16:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-03 21:16:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-03 21:16:39,553 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2019-09-03 21:16:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:16:39,810 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-09-03 21:16:39,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 21:16:39,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-09-03 21:16:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:16:39,815 INFO L225 Difference]: With dead ends: 41 [2019-09-03 21:16:39,815 INFO L226 Difference]: Without dead ends: 38 [2019-09-03 21:16:39,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-09-03 21:16:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-03 21:16:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-09-03 21:16:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-03 21:16:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-03 21:16:39,823 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-09-03 21:16:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:16:39,824 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-03 21:16:39,824 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-03 21:16:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-03 21:16:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-03 21:16:39,825 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:16:39,825 INFO L399 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:16:39,826 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:16:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2078000632, now seen corresponding path program 1 times [2019-09-03 21:16:39,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:16:39,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:39,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:39,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:16:39,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:16:39,834 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:16:39,834 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:16:39,834 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 21:16:39,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:39,850 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:16:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:39,866 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2019-09-03 21:16:39,867 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [21], [30], [33], [35], [38], [40], [41], [42], [43], [45], [46], [47], [48], [49], [50] [2019-09-03 21:16:39,869 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:16:39,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:16:40,213 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:16:40,214 INFO L272 AbstractInterpreter]: Visited 18 different actions 166 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 218 root evaluator evaluations with a maximum evaluation depth of 10. Performed 218 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-09-03 21:16:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:16:40,215 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:16:40,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:16:40,215 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-03 21:16:40,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:16:40,233 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:16:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:16:40,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-03 21:16:40,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:16:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-03 21:16:40,346 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:16:40,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:16:40,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:16:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 21:16:40,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:16:40,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-03 21:16:40,502 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:16:40,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-03 21:16:40,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-03 21:16:40,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-09-03 21:16:40,504 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 13 states. [2019-09-03 21:16:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:16:40,747 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-09-03 21:16:40,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 21:16:40,748 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2019-09-03 21:16:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:16:40,748 INFO L225 Difference]: With dead ends: 46 [2019-09-03 21:16:40,749 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:16:40,749 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-09-03 21:16:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:16:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:16:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:16:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:16:40,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-09-03 21:16:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:16:40,751 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:16:40,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-03 21:16:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:16:40,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:16:40,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:16:40 BoogieIcfgContainer [2019-09-03 21:16:40,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:16:40,762 INFO L168 Benchmark]: Toolchain (without parser) took 2936.55 ms. Allocated memory was 133.7 MB in the beginning and 226.0 MB in the end (delta: 92.3 MB). Free memory was 89.7 MB in the beginning and 73.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2019-09-03 21:16:40,763 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 133.7 MB. Free memory is still 107.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 21:16:40,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.93 ms. Allocated memory is still 133.7 MB. Free memory was 89.7 MB in the beginning and 79.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-03 21:16:40,768 INFO L168 Benchmark]: Boogie Preprocessor took 113.14 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 79.6 MB in the beginning and 176.3 MB in the end (delta: -96.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-03 21:16:40,769 INFO L168 Benchmark]: RCFGBuilder took 238.14 ms. Allocated memory is still 200.3 MB. Free memory was 176.3 MB in the beginning and 164.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-03 21:16:40,770 INFO L168 Benchmark]: TraceAbstraction took 2357.98 ms. Allocated memory was 200.3 MB in the beginning and 226.0 MB in the end (delta: 25.7 MB). Free memory was 164.8 MB in the beginning and 73.3 MB in the end (delta: 91.5 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2019-09-03 21:16:40,778 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 ms. Allocated memory is still 133.7 MB. Free memory is still 107.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 222.93 ms. Allocated memory is still 133.7 MB. Free memory was 89.7 MB in the beginning and 79.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.14 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 79.6 MB in the beginning and 176.3 MB in the end (delta: -96.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.14 ms. Allocated memory is still 200.3 MB. Free memory was 176.3 MB in the beginning and 164.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2357.98 ms. Allocated memory was 200.3 MB in the beginning and 226.0 MB in the end (delta: 25.7 MB). Free memory was 164.8 MB in the beginning and 73.3 MB in the end (delta: 91.5 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 47 SDslu, 186 SDs, 0 SdLazy, 265 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 13882 SizeOfPredicates, 8 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 80/112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...