java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:29:22,067 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:29:22,069 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:29:22,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:29:22,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:29:22,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:29:22,084 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:29:22,086 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:29:22,087 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:29:22,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:29:22,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:29:22,090 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:29:22,091 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:29:22,092 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:29:22,093 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:29:22,094 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:29:22,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:29:22,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:29:22,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:29:22,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:29:22,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:29:22,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:29:22,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:29:22,105 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:29:22,106 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:29:22,107 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:29:22,108 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:29:22,109 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:29:22,109 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:29:22,111 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:29:22,111 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:29:22,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:29:22,112 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:29:22,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:29:22,113 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:29:22,114 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:29:22,114 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:29:22,138 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:29:22,139 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:29:22,142 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:29:22,143 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:29:22,143 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:29:22,143 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:29:22,143 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:29:22,144 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:29:22,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:29:22,146 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:29:22,146 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:29:22,146 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:29:22,146 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:29:22,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:29:22,148 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:29:22,148 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:29:22,148 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:29:22,148 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:29:22,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:29:22,149 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:29:22,149 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:29:22,149 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:29:22,149 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:29:22,149 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:29:22,150 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:29:22,150 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:29:22,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:29:22,151 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:29:22,151 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:29:22,151 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:29:22,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:29:22,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:29:22,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:29:22,233 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:29:22,234 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:29:22,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-11-12 19:29:22,307 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e280a7f3/c14c60f3b5c044ed85a6b8d8348df131/FLAG81009b1b2 [2018-11-12 19:29:23,040 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:29:23,041 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-11-12 19:29:23,068 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e280a7f3/c14c60f3b5c044ed85a6b8d8348df131/FLAG81009b1b2 [2018-11-12 19:29:23,090 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e280a7f3/c14c60f3b5c044ed85a6b8d8348df131 [2018-11-12 19:29:23,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:29:23,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:29:23,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:29:23,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:29:23,112 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:29:23,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:29:23" (1/1) ... [2018-11-12 19:29:23,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f673d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:23, skipping insertion in model container [2018-11-12 19:29:23,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:29:23" (1/1) ... [2018-11-12 19:29:23,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:29:23,241 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:29:24,291 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:29:24,296 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:29:24,689 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:29:24,711 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:29:24,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24 WrapperNode [2018-11-12 19:29:24,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:29:24,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:29:24,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:29:24,713 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:29:24,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:24,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:24,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:29:24,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:29:24,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:29:24,968 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:29:24,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:24,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:24,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:25,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:25,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:25,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (1/1) ... [2018-11-12 19:29:25,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:29:25,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:29:25,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:29:25,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:29:25,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (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 [2018-11-12 19:29:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:29:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:29:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:29:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:29:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:29:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:29:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:29:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:29:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:29:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:29:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:29:34,601 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:29:34,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:29:34 BoogieIcfgContainer [2018-11-12 19:29:34,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:29:34,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:29:34,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:29:34,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:29:34,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:29:23" (1/3) ... [2018-11-12 19:29:34,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe09c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:29:34, skipping insertion in model container [2018-11-12 19:29:34,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:29:24" (2/3) ... [2018-11-12 19:29:34,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe09c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:29:34, skipping insertion in model container [2018-11-12 19:29:34,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:29:34" (3/3) ... [2018-11-12 19:29:34,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14_true-unreach-call.c [2018-11-12 19:29:34,622 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:29:34,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:29:34,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:29:34,697 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:29:34,697 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:29:34,697 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:29:34,698 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:29:34,698 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:29:34,698 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:29:34,698 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:29:34,698 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:29:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 19:29:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-12 19:29:34,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:34,749 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:29:34,751 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:34,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash 104391076, now seen corresponding path program 1 times [2018-11-12 19:29:34,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:34,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:34,810 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:35,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:29:35,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:29:35,287 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:35,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:29:35,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:29:35,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:29:35,315 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 19:29:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:43,359 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-12 19:29:43,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:29:43,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-12 19:29:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:43,394 INFO L225 Difference]: With dead ends: 2162 [2018-11-12 19:29:43,394 INFO L226 Difference]: Without dead ends: 1552 [2018-11-12 19:29:43,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:29:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-12 19:29:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-12 19:29:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-12 19:29:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-12 19:29:43,565 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 54 [2018-11-12 19:29:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:43,566 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-12 19:29:43,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:29:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-12 19:29:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-12 19:29:43,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:43,577 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:29:43,577 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:43,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash -733218574, now seen corresponding path program 1 times [2018-11-12 19:29:43,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:43,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:43,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:43,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:43,579 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:43,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:29:43,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:29:43,885 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:43,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:29:43,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:29:43,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:29:43,890 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-12 19:29:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:54,449 INFO L93 Difference]: Finished difference Result 5786 states and 10669 transitions. [2018-11-12 19:29:54,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:29:54,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-12 19:29:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:54,484 INFO L225 Difference]: With dead ends: 5786 [2018-11-12 19:29:54,484 INFO L226 Difference]: Without dead ends: 4267 [2018-11-12 19:29:54,505 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:29:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-12 19:29:54,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4239. [2018-11-12 19:29:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4239 states. [2018-11-12 19:29:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6346 transitions. [2018-11-12 19:29:54,642 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6346 transitions. Word has length 133 [2018-11-12 19:29:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:54,643 INFO L480 AbstractCegarLoop]: Abstraction has 4239 states and 6346 transitions. [2018-11-12 19:29:54,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:29:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6346 transitions. [2018-11-12 19:29:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-12 19:29:54,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:54,648 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:29:54,648 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:54,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:54,649 INFO L82 PathProgramCache]: Analyzing trace with hash 9362786, now seen corresponding path program 1 times [2018-11-12 19:29:54,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:54,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:54,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:54,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:54,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:54,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:29:54,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:29:54,869 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:54,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:29:54,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:29:54,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:29:54,871 INFO L87 Difference]: Start difference. First operand 4239 states and 6346 transitions. Second operand 6 states. [2018-11-12 19:29:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:59,964 INFO L93 Difference]: Finished difference Result 12257 states and 20025 transitions. [2018-11-12 19:29:59,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:29:59,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-12 19:29:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:30:00,024 INFO L225 Difference]: With dead ends: 12257 [2018-11-12 19:30:00,025 INFO L226 Difference]: Without dead ends: 8024 [2018-11-12 19:30:00,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:30:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2018-11-12 19:30:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7939. [2018-11-12 19:30:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7939 states. [2018-11-12 19:30:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 11950 transitions. [2018-11-12 19:30:00,300 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 11950 transitions. Word has length 134 [2018-11-12 19:30:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:30:00,300 INFO L480 AbstractCegarLoop]: Abstraction has 7939 states and 11950 transitions. [2018-11-12 19:30:00,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:30:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 11950 transitions. [2018-11-12 19:30:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-12 19:30:00,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:30:00,307 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:30:00,307 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:30:00,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1511832028, now seen corresponding path program 1 times [2018-11-12 19:30:00,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:30:00,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:00,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:00,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:00,313 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:30:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:00,707 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:30:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 19:30:00,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:00,875 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:30:00,877 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-12 19:30:00,879 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:30:00,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:30:00,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:30:01,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:30:02,081 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:30:02,083 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Performed 4145 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4145 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:30:02,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:02,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:30:02,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:02,132 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_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 -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 [2018-11-12 19:30:02,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:02,150 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:30:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:02,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:30:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:30:02,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:30:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:30:03,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:30:03,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 19:30:03,075 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:30:03,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:30:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:30:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:30:03,078 INFO L87 Difference]: Start difference. First operand 7939 states and 11950 transitions. Second operand 9 states. [2018-11-12 19:30:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:30:10,715 INFO L93 Difference]: Finished difference Result 19972 states and 30375 transitions. [2018-11-12 19:30:10,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 19:30:10,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2018-11-12 19:30:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:30:10,816 INFO L225 Difference]: With dead ends: 19972 [2018-11-12 19:30:10,817 INFO L226 Difference]: Without dead ends: 12004 [2018-11-12 19:30:10,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 414 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:30:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12004 states. [2018-11-12 19:30:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12004 to 11979. [2018-11-12 19:30:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11979 states. [2018-11-12 19:30:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 15403 transitions. [2018-11-12 19:30:11,197 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 15403 transitions. Word has length 208 [2018-11-12 19:30:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:30:11,198 INFO L480 AbstractCegarLoop]: Abstraction has 11979 states and 15403 transitions. [2018-11-12 19:30:11,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:30:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 15403 transitions. [2018-11-12 19:30:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-12 19:30:11,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:30:11,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:30:11,207 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:30:11,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:11,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1311071484, now seen corresponding path program 1 times [2018-11-12 19:30:11,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:30:11,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:11,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:11,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:11,211 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:30:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-12 19:30:11,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:30:11,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:30:11,564 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:30:11,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:30:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:30:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:30:11,565 INFO L87 Difference]: Start difference. First operand 11979 states and 15403 transitions. Second operand 4 states. [2018-11-12 19:30:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:30:17,891 INFO L93 Difference]: Finished difference Result 31979 states and 43968 transitions. [2018-11-12 19:30:17,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:30:17,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2018-11-12 19:30:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:30:17,969 INFO L225 Difference]: With dead ends: 31979 [2018-11-12 19:30:17,970 INFO L226 Difference]: Without dead ends: 15887 [2018-11-12 19:30:18,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:30:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2018-11-12 19:30:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 13191. [2018-11-12 19:30:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13191 states. [2018-11-12 19:30:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13191 states to 13191 states and 15980 transitions. [2018-11-12 19:30:18,366 INFO L78 Accepts]: Start accepts. Automaton has 13191 states and 15980 transitions. Word has length 221 [2018-11-12 19:30:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:30:18,367 INFO L480 AbstractCegarLoop]: Abstraction has 13191 states and 15980 transitions. [2018-11-12 19:30:18,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:30:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 13191 states and 15980 transitions. [2018-11-12 19:30:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-12 19:30:18,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:30:18,376 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:30:18,376 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:30:18,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1606849281, now seen corresponding path program 1 times [2018-11-12 19:30:18,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:30:18,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:18,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:18,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:18,379 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:30:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:19,014 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:30:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-12 19:30:19,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:19,735 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:30:19,736 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-11-12 19:30:19,741 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:30:19,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:30:19,756 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:30:19,908 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:30:23,226 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:30:23,226 INFO L272 AbstractInterpreter]: Visited 151 different actions 1033 times. Merged at 7 different actions 45 times. Widened at 1 different actions 2 times. Performed 21147 root evaluator evaluations with a maximum evaluation depth of 6. Performed 21147 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 7 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:30:23,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:23,266 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:30:23,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:23,266 INFO L192 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) [2018-11-12 19:30:23,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:23,288 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:30:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:23,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:30:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-12 19:30:23,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:30:24,661 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-12 19:30:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:30:25,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:30:25,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2018-11-12 19:30:25,356 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:30:25,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 19:30:25,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 19:30:25,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:30:25,358 INFO L87 Difference]: Start difference. First operand 13191 states and 15980 transitions. Second operand 13 states. [2018-11-12 19:31:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:18,042 INFO L93 Difference]: Finished difference Result 85557 states and 108781 transitions. [2018-11-12 19:31:18,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-11-12 19:31:18,043 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 284 [2018-11-12 19:31:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:18,317 INFO L225 Difference]: With dead ends: 85557 [2018-11-12 19:31:18,317 INFO L226 Difference]: Without dead ends: 61042 [2018-11-12 19:31:18,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 561 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6352 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2495, Invalid=14535, Unknown=0, NotChecked=0, Total=17030 [2018-11-12 19:31:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61042 states. [2018-11-12 19:31:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61042 to 55543. [2018-11-12 19:31:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55543 states. [2018-11-12 19:31:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 65507 transitions. [2018-11-12 19:31:19,780 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 65507 transitions. Word has length 284 [2018-11-12 19:31:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:19,781 INFO L480 AbstractCegarLoop]: Abstraction has 55543 states and 65507 transitions. [2018-11-12 19:31:19,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 19:31:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 65507 transitions. [2018-11-12 19:31:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-11-12 19:31:19,803 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:19,803 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:31:19,804 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:19,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:19,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1354231450, now seen corresponding path program 1 times [2018-11-12 19:31:19,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:19,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:19,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:19,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:19,806 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:20,870 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-11-12 19:31:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 145 proven. 17 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-11-12 19:31:21,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:21,328 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:21,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-11-12 19:31:21,328 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:21,341 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:21,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:21,479 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:24,651 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:24,651 INFO L272 AbstractInterpreter]: Visited 152 different actions 1201 times. Merged at 8 different actions 65 times. Widened at 1 different actions 3 times. Performed 26535 root evaluator evaluations with a maximum evaluation depth of 6. Performed 26535 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:31:24,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:24,689 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:24,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:24,689 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_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 -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 [2018-11-12 19:31:24,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:24,702 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:24,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-12 19:31:25,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:25,805 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 19:31:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 147 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:31:26,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:31:26,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-11-12 19:31:26,852 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:31:26,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:31:26,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:31:26,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:31:26,854 INFO L87 Difference]: Start difference. First operand 55543 states and 65507 transitions. Second operand 15 states. [2018-11-12 19:31:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:49,315 INFO L93 Difference]: Finished difference Result 159081 states and 189284 transitions. [2018-11-12 19:31:49,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-12 19:31:49,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 394 [2018-11-12 19:31:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:49,587 INFO L225 Difference]: With dead ends: 159081 [2018-11-12 19:31:49,587 INFO L226 Difference]: Without dead ends: 96605 [2018-11-12 19:31:49,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 780 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=908, Invalid=3514, Unknown=0, NotChecked=0, Total=4422 [2018-11-12 19:31:49,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96605 states. [2018-11-12 19:31:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96605 to 90332. [2018-11-12 19:31:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90332 states. [2018-11-12 19:31:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90332 states to 90332 states and 105520 transitions. [2018-11-12 19:31:51,208 INFO L78 Accepts]: Start accepts. Automaton has 90332 states and 105520 transitions. Word has length 394 [2018-11-12 19:31:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:51,209 INFO L480 AbstractCegarLoop]: Abstraction has 90332 states and 105520 transitions. [2018-11-12 19:31:51,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:31:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 90332 states and 105520 transitions. [2018-11-12 19:31:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-12 19:31:51,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:51,232 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:31:51,232 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:51,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:51,233 INFO L82 PathProgramCache]: Analyzing trace with hash 863350675, now seen corresponding path program 1 times [2018-11-12 19:31:51,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:51,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:51,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:51,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:51,234 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-11-12 19:31:51,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:31:51,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:31:51,772 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:31:51,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:31:51,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:31:51,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:31:51,774 INFO L87 Difference]: Start difference. First operand 90332 states and 105520 transitions. Second operand 4 states. [2018-11-12 19:31:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:58,158 INFO L93 Difference]: Finished difference Result 195651 states and 231991 transitions. [2018-11-12 19:31:58,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:31:58,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 455 [2018-11-12 19:31:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:58,507 INFO L225 Difference]: With dead ends: 195651 [2018-11-12 19:31:58,507 INFO L226 Difference]: Without dead ends: 112470 [2018-11-12 19:31:59,586 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:31:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112470 states. [2018-11-12 19:32:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112470 to 109424. [2018-11-12 19:32:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109424 states. [2018-11-12 19:32:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109424 states to 109424 states and 125299 transitions. [2018-11-12 19:32:01,200 INFO L78 Accepts]: Start accepts. Automaton has 109424 states and 125299 transitions. Word has length 455 [2018-11-12 19:32:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:32:01,202 INFO L480 AbstractCegarLoop]: Abstraction has 109424 states and 125299 transitions. [2018-11-12 19:32:01,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:32:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 109424 states and 125299 transitions. [2018-11-12 19:32:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-11-12 19:32:01,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:32:01,240 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:32:01,240 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:32:01,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash 911489126, now seen corresponding path program 1 times [2018-11-12 19:32:01,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:32:01,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:01,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:01,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:01,242 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:32:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:01,965 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:32:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 453 proven. 121 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-11-12 19:32:02,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:02,427 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:32:02,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-11-12 19:32:02,428 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:32:02,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:32:02,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:32:02,491 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:32:05,550 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:32:05,550 INFO L272 AbstractInterpreter]: Visited 202 different actions 1412 times. Merged at 9 different actions 66 times. Widened at 1 different actions 2 times. Performed 30115 root evaluator evaluations with a maximum evaluation depth of 6. Performed 30115 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 19 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:32:05,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:05,591 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:32:05,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:05,591 INFO L192 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:32:05,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:05,603 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:32:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:05,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:32:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-12 19:32:06,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:32:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-12 19:32:06,339 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:32:06,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-12 19:32:06,339 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:32:06,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:32:06,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:32:06,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:32:06,340 INFO L87 Difference]: Start difference. First operand 109424 states and 125299 transitions. Second operand 3 states. [2018-11-12 19:32:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:32:09,663 INFO L93 Difference]: Finished difference Result 201526 states and 232222 transitions. [2018-11-12 19:32:09,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:32:09,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 542 [2018-11-12 19:32:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:32:09,925 INFO L225 Difference]: With dead ends: 201526 [2018-11-12 19:32:09,925 INFO L226 Difference]: Without dead ends: 103972 [2018-11-12 19:32:10,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1085 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:32:10,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103972 states. [2018-11-12 19:32:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103972 to 103276. [2018-11-12 19:32:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103276 states. [2018-11-12 19:32:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103276 states to 103276 states and 118317 transitions. [2018-11-12 19:32:11,149 INFO L78 Accepts]: Start accepts. Automaton has 103276 states and 118317 transitions. Word has length 542 [2018-11-12 19:32:11,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:32:11,150 INFO L480 AbstractCegarLoop]: Abstraction has 103276 states and 118317 transitions. [2018-11-12 19:32:11,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:32:11,150 INFO L276 IsEmpty]: Start isEmpty. Operand 103276 states and 118317 transitions. [2018-11-12 19:32:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-11-12 19:32:11,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:32:11,206 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:32:11,206 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:32:11,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 357807604, now seen corresponding path program 1 times [2018-11-12 19:32:11,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:32:11,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:11,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:11,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:11,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:32:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-12 19:32:12,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:12,293 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:32:12,293 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 620 with the following transitions: [2018-11-12 19:32:12,294 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:32:12,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:32:12,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:32:12,397 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:32:15,520 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:32:15,521 INFO L272 AbstractInterpreter]: Visited 203 different actions 1432 times. Merged at 10 different actions 80 times. Widened at 1 different actions 2 times. Performed 30242 root evaluator evaluations with a maximum evaluation depth of 6. Performed 30242 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 25 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:32:15,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:15,547 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:32:15,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:15,547 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:32:15,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:15,555 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:32:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:15,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:32:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-12 19:32:16,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:32:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 76 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-12 19:32:16,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:32:16,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-11-12 19:32:16,850 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:32:16,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:32:16,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:32:16,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:32:16,852 INFO L87 Difference]: Start difference. First operand 103276 states and 118317 transitions. Second operand 8 states. [2018-11-12 19:32:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:32:28,747 INFO L93 Difference]: Finished difference Result 244302 states and 281258 transitions. [2018-11-12 19:32:28,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:32:28,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 619 [2018-11-12 19:32:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:32:29,153 INFO L225 Difference]: With dead ends: 244302 [2018-11-12 19:32:29,153 INFO L226 Difference]: Without dead ends: 152457 [2018-11-12 19:32:29,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1245 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:32:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152457 states. [2018-11-12 19:32:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152457 to 140568. [2018-11-12 19:32:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140568 states. [2018-11-12 19:32:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140568 states to 140568 states and 160254 transitions. [2018-11-12 19:32:31,587 INFO L78 Accepts]: Start accepts. Automaton has 140568 states and 160254 transitions. Word has length 619 [2018-11-12 19:32:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:32:31,588 INFO L480 AbstractCegarLoop]: Abstraction has 140568 states and 160254 transitions. [2018-11-12 19:32:31,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:32:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 140568 states and 160254 transitions. [2018-11-12 19:32:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-11-12 19:32:31,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:32:31,629 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:32:31,629 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:32:31,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2014214146, now seen corresponding path program 1 times [2018-11-12 19:32:31,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:32:31,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:31,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:31,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:31,631 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:32:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:32,206 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:32:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 253 proven. 595 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-12 19:32:33,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:33,446 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:32:33,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 625 with the following transitions: [2018-11-12 19:32:33,447 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:32:33,450 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:32:33,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:32:33,524 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:32:38,580 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:32:38,580 INFO L272 AbstractInterpreter]: Visited 203 different actions 1427 times. Merged at 10 different actions 75 times. Widened at 1 different actions 2 times. Performed 29994 root evaluator evaluations with a maximum evaluation depth of 6. Performed 29994 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 25 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:32:38,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:38,601 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:32:38,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:32:38,601 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:32:38,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:38,610 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:32:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:38,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:32:43,756 WARN L179 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 433 DAG size of output: 20 [2018-11-12 19:32:47,296 WARN L179 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 34 [2018-11-12 19:32:51,418 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 67 DAG size of output: 26 [2018-11-12 19:32:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 507 proven. 43 refuted. 2 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-12 19:32:52,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:32:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-12 19:32:55,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:32:55,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 22 [2018-11-12 19:32:55,598 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:32:55,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:32:55,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:32:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=374, Unknown=4, NotChecked=0, Total=462 [2018-11-12 19:32:55,600 INFO L87 Difference]: Start difference. First operand 140568 states and 160254 transitions. Second operand 18 states. [2018-11-12 19:32:56,389 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 20 [2018-11-12 19:33:01,698 WARN L179 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 71 DAG size of output: 62 Received shutdown request... [2018-11-12 19:33:04,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:33:04,563 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:33:04,569 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:33:04,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:33:04 BoogieIcfgContainer [2018-11-12 19:33:04,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:33:04,570 INFO L168 Benchmark]: Toolchain (without parser) took 221467.42 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,571 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:33:04,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1607.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 253.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,574 INFO L168 Benchmark]: Boogie Preprocessor took 197.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,574 INFO L168 Benchmark]: RCFGBuilder took 9437.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 460.9 MB). Peak memory consumption was 460.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,575 INFO L168 Benchmark]: TraceAbstraction took 209965.60 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.8 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:33:04,581 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1607.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 253.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 197.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9437.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 460.9 MB). Peak memory consumption was 460.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209965.60 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.8 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 149). Cancelled while BasicCegarLoop was constructing difference of abstraction (140568states) and FLOYD_HOARE automaton (currently 10 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (195 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 209.8s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 146.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2918 SDtfs, 39325 SDslu, 4351 SDs, 0 SdLazy, 66943 SolverSat, 10737 SolverUnsat, 333 SolverUnknown, 0 SolverNotchecked, 110.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5638 GetRequests, 5342 SyntacticMatches, 13 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7828 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140568occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.7s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 30264 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 29.7s InterpolantComputationTime, 6339 NumberOfCodeBlocks, 6339 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8987 ConstructedInterpolants, 332 QuantifiedInterpolants, 18929627 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4181 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 10527/11825 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown