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/Problem18_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:59:29,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:59:29,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:59:29,125 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:59:29,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:59:29,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:59:29,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:59:29,136 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:59:29,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:59:29,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:59:29,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:59:29,141 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:59:29,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:59:29,154 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:59:29,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:59:29,156 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:59:29,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:59:29,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:59:29,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:59:29,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:59:29,174 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:59:29,177 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:59:29,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:59:29,180 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:59:29,180 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:59:29,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:59:29,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:59:29,184 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:59:29,188 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:59:29,189 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:59:29,189 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:59:29,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:59:29,192 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:59:29,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:59:29,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:59:29,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:59:29,194 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 16:59:29,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:59:29,226 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:59:29,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:59:29,227 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:59:29,227 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:59:29,227 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:59:29,227 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:59:29,227 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:59:29,228 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:59:29,228 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:59:29,229 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:59:29,229 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:59:29,229 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:59:29,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:59:29,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:59:29,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:59:29,230 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:59:29,230 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:59:29,232 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:59:29,232 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:59:29,232 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:59:29,233 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:59:29,233 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:59:29,233 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:59:29,233 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:59:29,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:59:29,233 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:59:29,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:59:29,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:59:29,234 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:59:29,234 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:59:29,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:59:29,235 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:59:29,235 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:59:29,235 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:59:29,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:59:29,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:59:29,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:59:29,316 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:59:29,316 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:59:29,317 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-11-12 16:59:29,377 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69913f4c2/e4fc3d0597e64ab290617dc7ad155470/FLAG84607ebb9 [2018-11-12 16:59:30,113 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:59:30,114 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-11-12 16:59:30,141 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69913f4c2/e4fc3d0597e64ab290617dc7ad155470/FLAG84607ebb9 [2018-11-12 16:59:30,158 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69913f4c2/e4fc3d0597e64ab290617dc7ad155470 [2018-11-12 16:59:30,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:59:30,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:59:30,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:59:30,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:59:30,178 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:59:30,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:59:30" (1/1) ... [2018-11-12 16:59:30,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7439d701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:30, skipping insertion in model container [2018-11-12 16:59:30,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:59:30" (1/1) ... [2018-11-12 16:59:30,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:59:30,351 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:59:31,551 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:59:31,556 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:59:32,140 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:59:32,173 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:59:32,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32 WrapperNode [2018-11-12 16:59:32,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:59:32,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:59:32,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:59:32,176 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:59:32,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:59:32,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:59:32,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:59:32,445 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:59:32,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (1/1) ... [2018-11-12 16:59:32,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:59:32,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:59:32,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:59:32,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:59:32,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (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 16:59:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:59:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:59:32,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:59:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:59:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:59:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:59:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:59:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:59:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:59:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:59:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:59:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:59:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:59:41,052 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:59:41,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:59:41 BoogieIcfgContainer [2018-11-12 16:59:41,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:59:41,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:59:41,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:59:41,058 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:59:41,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:59:30" (1/3) ... [2018-11-12 16:59:41,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1527804e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:59:41, skipping insertion in model container [2018-11-12 16:59:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:59:32" (2/3) ... [2018-11-12 16:59:41,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1527804e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:59:41, skipping insertion in model container [2018-11-12 16:59:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:59:41" (3/3) ... [2018-11-12 16:59:41,062 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label52_false-unreach-call.c [2018-11-12 16:59:41,073 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:59:41,084 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:59:41,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:59:41,151 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:59:41,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:59:41,152 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:59:41,152 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:59:41,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:59:41,152 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:59:41,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:59:41,153 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:59:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:59:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-12 16:59:41,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:41,204 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] [2018-11-12 16:59:41,207 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:41,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:41,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1718178119, now seen corresponding path program 1 times [2018-11-12 16:59:41,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:41,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:41,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:41,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:41,273 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:41,658 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 16:59:41,665 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 16:59:41,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:41,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:59:41,669 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:41,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:59:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:59:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:59:41,697 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-12 16:59:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:52,684 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-12 16:59:52,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:59:52,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-12 16:59:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:52,721 INFO L225 Difference]: With dead ends: 2974 [2018-11-12 16:59:52,721 INFO L226 Difference]: Without dead ends: 2193 [2018-11-12 16:59:52,786 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 16:59:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-12 16:59:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-12 16:59:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-12 16:59:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-11-12 16:59:52,986 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 23 [2018-11-12 16:59:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:52,986 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-11-12 16:59:52,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:59:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-11-12 16:59:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-12 16:59:52,995 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:52,996 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:59:52,996 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:52,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1227431640, now seen corresponding path program 1 times [2018-11-12 16:59:52,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:53,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:53,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:53,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:53,001 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:59:53,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:53,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:59:53,323 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:53,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:59:53,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:59:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:59:53,326 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-11-12 17:00:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:02,043 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-11-12 17:00:02,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:00:02,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-12 17:00:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:02,081 INFO L225 Difference]: With dead ends: 6600 [2018-11-12 17:00:02,082 INFO L226 Difference]: Without dead ends: 4413 [2018-11-12 17:00:02,090 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:00:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-12 17:00:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-12 17:00:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-12 17:00:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-11-12 17:00:02,238 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 93 [2018-11-12 17:00:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:02,239 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-11-12 17:00:02,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:00:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-11-12 17:00:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-12 17:00:02,245 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:02,246 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:00:02,246 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:02,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1923349871, now seen corresponding path program 1 times [2018-11-12 17:00:02,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:02,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:02,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:02,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:02,249 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:00:02,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:00:02,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:00:02,545 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:02,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:00:02,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:00:02,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:00:02,547 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-11-12 17:00:07,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:07,798 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-11-12 17:00:07,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:00:07,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-12 17:00:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:07,849 INFO L225 Difference]: With dead ends: 11002 [2018-11-12 17:00:07,849 INFO L226 Difference]: Without dead ends: 6630 [2018-11-12 17:00:07,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:00:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-12 17:00:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-12 17:00:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 17:00:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-11-12 17:00:08,046 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 120 [2018-11-12 17:00:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:08,047 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-11-12 17:00:08,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:00:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-11-12 17:00:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-12 17:00:08,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:08,058 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 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 17:00:08,058 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:08,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1072228357, now seen corresponding path program 1 times [2018-11-12 17:00:08,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:08,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:08,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:08,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:08,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:00:08,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:00:08,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:00:08,306 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:08,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:00:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:00:08,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:00:08,310 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-11-12 17:00:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:16,013 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-11-12 17:00:16,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:00:16,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-11-12 17:00:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:16,040 INFO L225 Difference]: With dead ends: 13174 [2018-11-12 17:00:16,040 INFO L226 Difference]: Without dead ends: 6590 [2018-11-12 17:00:16,062 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 17:00:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-11-12 17:00:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-11-12 17:00:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 17:00:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-11-12 17:00:16,184 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 130 [2018-11-12 17:00:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:16,185 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-11-12 17:00:16,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:00:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-11-12 17:00:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-12 17:00:16,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:16,189 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:16,189 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:16,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2065744106, now seen corresponding path program 1 times [2018-11-12 17:00:16,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:16,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:16,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:16,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:16,191 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 17:00:16,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:00:16,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:00:16,342 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:16,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:00:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:00:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:00:16,343 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-11-12 17:00:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:23,013 INFO L93 Difference]: Finished difference Result 26037 states and 32773 transitions. [2018-11-12 17:00:23,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:00:23,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-11-12 17:00:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:23,084 INFO L225 Difference]: With dead ends: 26037 [2018-11-12 17:00:23,085 INFO L226 Difference]: Without dead ends: 19453 [2018-11-12 17:00:23,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:00:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19453 states. [2018-11-12 17:00:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19453 to 18750. [2018-11-12 17:00:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18750 states. [2018-11-12 17:00:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18750 states to 18750 states and 22778 transitions. [2018-11-12 17:00:23,454 INFO L78 Accepts]: Start accepts. Automaton has 18750 states and 22778 transitions. Word has length 200 [2018-11-12 17:00:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:23,455 INFO L480 AbstractCegarLoop]: Abstraction has 18750 states and 22778 transitions. [2018-11-12 17:00:23,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:00:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 18750 states and 22778 transitions. [2018-11-12 17:00:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-12 17:00:23,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:23,460 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 17:00:23,461 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:23,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -495991293, now seen corresponding path program 1 times [2018-11-12 17:00:23,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:23,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:23,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:23,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:23,463 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:23,911 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-11-12 17:00:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:00:24,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:00:24,257 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:00:24,258 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-12 17:00:24,260 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1707], [1709], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2192], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:00:24,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:00:24,312 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:00:24,929 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:00:24,931 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Performed 972 root evaluator evaluations with a maximum evaluation depth of 6. Performed 972 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 17:00:24,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:24,977 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:00:25,574 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 77.37% of their original sizes. [2018-11-12 17:00:25,574 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:00:25,939 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-11-12 17:00:25,939 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:00:25,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:00:25,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-11-12 17:00:25,941 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:25,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:00:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:00:25,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:00:25,945 INFO L87 Difference]: Start difference. First operand 18750 states and 22778 transitions. Second operand 7 states. [2018-11-12 17:00:34,763 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:01:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:02,102 INFO L93 Difference]: Finished difference Result 38199 states and 46331 transitions. [2018-11-12 17:01:02,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:01:02,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-11-12 17:01:02,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:02,155 INFO L225 Difference]: With dead ends: 38199 [2018-11-12 17:01:02,155 INFO L226 Difference]: Without dead ends: 19455 [2018-11-12 17:01:02,190 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:01:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19455 states. [2018-11-12 17:01:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19455 to 19453. [2018-11-12 17:01:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19453 states. [2018-11-12 17:01:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19453 states to 19453 states and 23493 transitions. [2018-11-12 17:01:02,502 INFO L78 Accepts]: Start accepts. Automaton has 19453 states and 23493 transitions. Word has length 219 [2018-11-12 17:01:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:02,503 INFO L480 AbstractCegarLoop]: Abstraction has 19453 states and 23493 transitions. [2018-11-12 17:01:02,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:01:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 19453 states and 23493 transitions. [2018-11-12 17:01:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-12 17:01:02,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:02,512 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:02,512 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:02,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:02,513 INFO L82 PathProgramCache]: Analyzing trace with hash 496417121, now seen corresponding path program 1 times [2018-11-12 17:01:02,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:02,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:02,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:02,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:02,514 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:03,064 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:01:03,261 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:01:03,473 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:01:03,902 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 17:01:04,414 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-12 17:01:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 107 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:01:04,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:01:04,728 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:01:04,728 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-11-12 17:01:04,729 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1707], [1709], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2192], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:01:04,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:01:04,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:01:05,671 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:01:05,671 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5867 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5867 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:01:05,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:05,710 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:01:07,822 INFO L227 lantSequenceWeakener]: Weakened 103 states. On average, predicates are now at 77.86% of their original sizes. [2018-11-12 17:01:07,823 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:01:10,136 INFO L415 sIntCurrentIteration]: We unified 405 AI predicates to 405 [2018-11-12 17:01:10,136 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:01:10,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:01:10,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [11] total 30 [2018-11-12 17:01:10,137 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:10,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 17:01:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 17:01:10,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 17:01:10,139 INFO L87 Difference]: Start difference. First operand 19453 states and 23493 transitions. Second operand 21 states. [2018-11-12 17:01:46,272 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:02:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:02:41,145 INFO L93 Difference]: Finished difference Result 40143 states and 48297 transitions. [2018-11-12 17:02:41,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 17:02:41,146 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 406 [2018-11-12 17:02:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:02:41,222 INFO L225 Difference]: With dead ends: 40143 [2018-11-12 17:02:41,222 INFO L226 Difference]: Without dead ends: 19458 [2018-11-12 17:02:41,276 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 419 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=955, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 17:02:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19458 states. [2018-11-12 17:02:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19458 to 19453. [2018-11-12 17:02:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19453 states. [2018-11-12 17:02:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19453 states to 19453 states and 23485 transitions. [2018-11-12 17:02:41,794 INFO L78 Accepts]: Start accepts. Automaton has 19453 states and 23485 transitions. Word has length 406 [2018-11-12 17:02:41,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:02:41,795 INFO L480 AbstractCegarLoop]: Abstraction has 19453 states and 23485 transitions. [2018-11-12 17:02:41,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 17:02:41,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19453 states and 23485 transitions. [2018-11-12 17:02:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2018-11-12 17:02:41,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:41,817 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:41,818 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:41,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 744145050, now seen corresponding path program 1 times [2018-11-12 17:02:41,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:41,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:41,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:41,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:41,820 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:43,139 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-11-12 17:02:43,659 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:02:43,938 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-12 17:02:44,295 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 17:02:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 60 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:02:46,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:02:46,283 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:02:46,283 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 748 with the following transitions: [2018-11-12 17:02:46,285 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1707], [1709], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2192], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:02:46,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:02:46,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:02:47,297 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:02:47,298 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 15026 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15026 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:02:47,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:47,302 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:02:48,614 INFO L227 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-12 17:02:48,615 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:02:49,592 INFO L415 sIntCurrentIteration]: We unified 746 AI predicates to 746 [2018-11-12 17:02:49,592 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:02:49,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:02:49,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [16] total 45 [2018-11-12 17:02:49,593 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:49,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 17:02:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 17:02:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2018-11-12 17:02:49,596 INFO L87 Difference]: Start difference. First operand 19453 states and 23485 transitions. Second operand 31 states. Received shutdown request... [2018-11-12 17:02:58,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:02:58,761 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:02:58,766 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:02:58,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:02:58 BoogieIcfgContainer [2018-11-12 17:02:58,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:02:58,767 INFO L168 Benchmark]: Toolchain (without parser) took 208595.62 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,769 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:02:58,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2000.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 269.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -940.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,773 INFO L168 Benchmark]: Boogie Preprocessor took 221.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,774 INFO L168 Benchmark]: RCFGBuilder took 8386.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,774 INFO L168 Benchmark]: TraceAbstraction took 197711.90 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 17:02:58,781 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2000.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 269.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -940.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 221.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8386.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197711.90 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was constructing difference of abstraction (19453states) and FLOYD_HOARE automaton (currently 9 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (174 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 197.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 176.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3468 SDtfs, 16624 SDslu, 1576 SDs, 0 SdLazy, 42397 SolverSat, 5834 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 82.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1424 GetRequests, 1330 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19453occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9978628643140983 AbsIntWeakeningRatio, 0.07158509861212564 AbsIntAvgWeakeningVarsNumRemoved, 12.49963476990504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 785 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 1938 NumberOfCodeBlocks, 1938 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1930 ConstructedInterpolants, 0 QuantifiedInterpolants, 9893858 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 364/937 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown