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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:30:16,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:30:16,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:30:16,222 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:30:16,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:30:16,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:30:16,225 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:30:16,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:30:16,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:30:16,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:30:16,232 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:30:16,234 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:30:16,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:30:16,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:30:16,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:30:16,243 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:30:16,244 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:30:16,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:30:16,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:30:16,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:30:16,254 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:30:16,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:30:16,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:30:16,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:30:16,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:30:16,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:30:16,259 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:30:16,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:30:16,260 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:30:16,261 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:30:16,262 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:30:16,262 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:30:16,262 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:30:16,263 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:30:16,263 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:30:16,264 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:30:16,264 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:30:16,291 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:30:16,292 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:30:16,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:30:16,293 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:30:16,293 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:30:16,293 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:30:16,297 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:30:16,297 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:30:16,297 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:30:16,297 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:30:16,298 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:30:16,298 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:30:16,299 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:30:16,299 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:30:16,299 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:30:16,300 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:30:16,300 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:30:16,300 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:30:16,300 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:30:16,300 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:30:16,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:30:16,301 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:30:16,301 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:30:16,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:30:16,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:30:16,304 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:30:16,304 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:30:16,304 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:30:16,304 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:30:16,305 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:30:16,305 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:30:16,305 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:30:16,305 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:30:16,306 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:30:16,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:30:16,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:30:16,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:30:16,393 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:30:16,393 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:30:16,394 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-09-18 11:30:16,734 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063bdd18a/47c55e48c84a40ac8f88e44201a605f2/FLAGf94b4497c [2018-09-18 11:30:17,157 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:30:17,158 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-09-18 11:30:17,187 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063bdd18a/47c55e48c84a40ac8f88e44201a605f2/FLAGf94b4497c [2018-09-18 11:30:17,203 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063bdd18a/47c55e48c84a40ac8f88e44201a605f2 [2018-09-18 11:30:17,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:30:17,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:30:17,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:17,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:30:17,226 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:30:17,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:17" (1/1) ... [2018-09-18 11:30:17,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:17, skipping insertion in model container [2018-09-18 11:30:17,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:17" (1/1) ... [2018-09-18 11:30:17,243 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:30:18,451 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:18,472 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:30:19,150 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:19,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19 WrapperNode [2018-09-18 11:30:19,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:19,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:19,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:30:19,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:30:19,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:19,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:19,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:19,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:30:19,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:30:19,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:30:20,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (1/1) ... [2018-09-18 11:30:20,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:30:20,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:30:20,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:30:20,602 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:30:20,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (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 [2018-09-18 11:30:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:30:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:30:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:30:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:30:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:30:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:30:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:30:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:30:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:30:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:30:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:30:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:30:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:30:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:30:32,281 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:30:32,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:32 BoogieIcfgContainer [2018-09-18 11:30:32,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:30:32,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:30:32,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:30:32,286 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:30:32,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:30:17" (1/3) ... [2018-09-18 11:30:32,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:32, skipping insertion in model container [2018-09-18 11:30:32,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:19" (2/3) ... [2018-09-18 11:30:32,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:32, skipping insertion in model container [2018-09-18 11:30:32,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:32" (3/3) ... [2018-09-18 11:30:32,290 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-09-18 11:30:32,300 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:30:32,311 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:30:32,375 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:30:32,375 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:30:32,375 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:30:32,376 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:30:32,376 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:30:32,376 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:30:32,376 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:30:32,376 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:30:32,376 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:30:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:30:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-18 11:30:32,430 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:32,431 INFO L376 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] [2018-09-18 11:30:32,432 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:32,438 INFO L82 PathProgramCache]: Analyzing trace with hash -832809957, now seen corresponding path program 1 times [2018-09-18 11:30:32,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:32,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:32,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:32,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:32,498 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:32,902 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:30:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:33,022 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:33,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:30:33,023 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:33,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:30:33,045 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:30:33,045 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:33,048 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:30:42,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:42,065 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:30:42,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:30:42,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-09-18 11:30:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:42,118 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:30:42,118 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:30:42,133 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:30:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:30:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:30:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:30:42,319 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 47 [2018-09-18 11:30:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:42,319 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:30:42,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:30:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:30:42,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-18 11:30:42,329 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:42,330 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:42,330 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash -342093644, now seen corresponding path program 1 times [2018-09-18 11:30:42,331 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:42,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:42,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:42,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:42,332 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:42,666 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:30:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:42,710 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:42,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:30:42,710 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:42,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:42,712 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:42,712 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:30:42,713 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:30:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:57,016 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:30:57,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:30:57,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-09-18 11:30:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:57,044 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:30:57,045 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:30:57,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:30:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:30:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:30:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:30:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:30:57,179 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 121 [2018-09-18 11:30:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:57,179 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:30:57,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:30:57,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-18 11:30:57,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:57,184 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:57,184 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1410131373, now seen corresponding path program 1 times [2018-09-18 11:30:57,185 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:57,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:57,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:57,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:57,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:57,434 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:57,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:30:57,434 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:57,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:30:57,435 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:30:57,435 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:30:57,435 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:31:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:11,261 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:31:11,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:11,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-18 11:31:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:11,307 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:31:11,307 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:31:11,323 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 [2018-09-18 11:31:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:31:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:31:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:31:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:31:11,571 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 126 [2018-09-18 11:31:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:11,572 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:31:11,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:31:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-18 11:31:11,575 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:11,576 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:11,576 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:11,576 INFO L82 PathProgramCache]: Analyzing trace with hash 750688061, now seen corresponding path program 1 times [2018-09-18 11:31:11,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:11,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:11,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:11,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:11,578 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:11,778 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:11,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:11,778 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:11,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:11,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:11,780 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:11,780 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:31:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:24,274 INFO L93 Difference]: Finished difference Result 23002 states and 39427 transitions. [2018-09-18 11:31:24,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:24,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-09-18 11:31:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:24,347 INFO L225 Difference]: With dead ends: 23002 [2018-09-18 11:31:24,347 INFO L226 Difference]: Without dead ends: 15084 [2018-09-18 11:31:24,386 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 [2018-09-18 11:31:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15084 states. [2018-09-18 11:31:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15084 to 14997. [2018-09-18 11:31:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14997 states. [2018-09-18 11:31:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14997 states to 14997 states and 22946 transitions. [2018-09-18 11:31:24,749 INFO L78 Accepts]: Start accepts. Automaton has 14997 states and 22946 transitions. Word has length 134 [2018-09-18 11:31:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:24,750 INFO L480 AbstractCegarLoop]: Abstraction has 14997 states and 22946 transitions. [2018-09-18 11:31:24,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 14997 states and 22946 transitions. [2018-09-18 11:31:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-18 11:31:24,756 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:24,756 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:24,756 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1560155152, now seen corresponding path program 1 times [2018-09-18 11:31:24,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:24,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:24,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:24,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:24,758 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:25,018 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:25,095 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:25,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:25,095 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:25,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:25,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:25,096 INFO L87 Difference]: Start difference. First operand 14997 states and 22946 transitions. Second operand 6 states. [2018-09-18 11:31:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:34,598 INFO L93 Difference]: Finished difference Result 37542 states and 59024 transitions. [2018-09-18 11:31:34,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:34,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-09-18 11:31:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:34,692 INFO L225 Difference]: With dead ends: 37542 [2018-09-18 11:31:34,693 INFO L226 Difference]: Without dead ends: 22551 [2018-09-18 11:31:34,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22551 states. [2018-09-18 11:31:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22551 to 22441. [2018-09-18 11:31:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22441 states. [2018-09-18 11:31:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22441 states to 22441 states and 31468 transitions. [2018-09-18 11:31:35,301 INFO L78 Accepts]: Start accepts. Automaton has 22441 states and 31468 transitions. Word has length 167 [2018-09-18 11:31:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:35,302 INFO L480 AbstractCegarLoop]: Abstraction has 22441 states and 31468 transitions. [2018-09-18 11:31:35,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22441 states and 31468 transitions. [2018-09-18 11:31:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-18 11:31:35,315 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:35,316 INFO L376 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, 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] [2018-09-18 11:31:35,316 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1155888016, now seen corresponding path program 1 times [2018-09-18 11:31:35,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:35,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:35,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:35,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:35,318 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:31:35,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:35,996 INFO L197 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 [2018-09-18 11:31:36,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:36,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:36,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:36,636 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:37,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:37,277 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:31:37,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:37,294 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:37,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:37,628 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:38,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:31:38,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:31:38,115 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:31:38,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:31:38,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:31:38,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:31:38,119 INFO L87 Difference]: Start difference. First operand 22441 states and 31468 transitions. Second operand 9 states. [2018-09-18 11:31:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:58,058 INFO L93 Difference]: Finished difference Result 68301 states and 108921 transitions. [2018-09-18 11:31:58,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-18 11:31:58,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2018-09-18 11:31:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:58,342 INFO L225 Difference]: With dead ends: 68301 [2018-09-18 11:31:58,342 INFO L226 Difference]: Without dead ends: 45866 [2018-09-18 11:31:58,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 882 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 11:31:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45866 states. [2018-09-18 11:31:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45866 to 44809. [2018-09-18 11:31:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44809 states. [2018-09-18 11:31:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44809 states to 44809 states and 58812 transitions. [2018-09-18 11:31:59,767 INFO L78 Accepts]: Start accepts. Automaton has 44809 states and 58812 transitions. Word has length 218 [2018-09-18 11:31:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:59,767 INFO L480 AbstractCegarLoop]: Abstraction has 44809 states and 58812 transitions. [2018-09-18 11:31:59,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:31:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 44809 states and 58812 transitions. [2018-09-18 11:31:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-18 11:31:59,781 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:59,781 INFO L376 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, 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] [2018-09-18 11:31:59,781 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1819097747, now seen corresponding path program 1 times [2018-09-18 11:31:59,782 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:59,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:59,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:59,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:59,784 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:00,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:00,045 INFO L197 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 [2018-09-18 11:32:00,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:00,054 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:00,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-18 11:32:00,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:01,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:01,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-18 11:32:01,233 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:01,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:01,234 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:01,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:32:01,234 INFO L87 Difference]: Start difference. First operand 44809 states and 58812 transitions. Second operand 5 states. [2018-09-18 11:32:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:12,195 INFO L93 Difference]: Finished difference Result 136089 states and 187652 transitions. [2018-09-18 11:32:12,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:32:12,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2018-09-18 11:32:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:12,527 INFO L225 Difference]: With dead ends: 136089 [2018-09-18 11:32:12,527 INFO L226 Difference]: Without dead ends: 91286 [2018-09-18 11:32:12,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:32:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91286 states. [2018-09-18 11:32:14,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91286 to 88408. [2018-09-18 11:32:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88408 states. [2018-09-18 11:32:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88408 states to 88408 states and 113103 transitions. [2018-09-18 11:32:14,827 INFO L78 Accepts]: Start accepts. Automaton has 88408 states and 113103 transitions. Word has length 243 [2018-09-18 11:32:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:14,827 INFO L480 AbstractCegarLoop]: Abstraction has 88408 states and 113103 transitions. [2018-09-18 11:32:14,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 88408 states and 113103 transitions. [2018-09-18 11:32:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-18 11:32:14,840 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:14,840 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:14,840 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash -6743438, now seen corresponding path program 1 times [2018-09-18 11:32:14,841 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:14,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:14,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:14,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:14,842 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:15,131 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:15,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:32:15,132 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:15,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:32:15,133 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:32:15,133 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:32:15,133 INFO L87 Difference]: Start difference. First operand 88408 states and 113103 transitions. Second operand 4 states. [2018-09-18 11:32:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:24,847 INFO L93 Difference]: Finished difference Result 211946 states and 279394 transitions. [2018-09-18 11:32:24,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:32:24,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-09-18 11:32:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:25,260 INFO L225 Difference]: With dead ends: 211946 [2018-09-18 11:32:25,260 INFO L226 Difference]: Without dead ends: 123544 [2018-09-18 11:32:25,439 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 [2018-09-18 11:32:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123544 states. [2018-09-18 11:32:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123544 to 123482. [2018-09-18 11:32:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123482 states. [2018-09-18 11:32:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123482 states to 123482 states and 157885 transitions. [2018-09-18 11:32:28,280 INFO L78 Accepts]: Start accepts. Automaton has 123482 states and 157885 transitions. Word has length 270 [2018-09-18 11:32:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:28,281 INFO L480 AbstractCegarLoop]: Abstraction has 123482 states and 157885 transitions. [2018-09-18 11:32:28,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:32:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 123482 states and 157885 transitions. [2018-09-18 11:32:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-18 11:32:28,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:28,304 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:28,305 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash 998229164, now seen corresponding path program 1 times [2018-09-18 11:32:28,305 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:28,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:28,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:28,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:28,307 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:28,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:28,766 INFO L197 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 [2018-09-18 11:32:28,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:28,775 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:28,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:29,239 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:29,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:29,836 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:29,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:29,853 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:30,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:30,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:30,369 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:32:30,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:32:30,370 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:32:30,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:32:30,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:32:30,372 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:32:30,372 INFO L87 Difference]: Start difference. First operand 123482 states and 157885 transitions. Second operand 9 states. [2018-09-18 11:32:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:45,954 INFO L93 Difference]: Finished difference Result 269793 states and 380253 transitions. [2018-09-18 11:32:45,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:32:45,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2018-09-18 11:32:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:46,544 INFO L225 Difference]: With dead ends: 269793 [2018-09-18 11:32:46,544 INFO L226 Difference]: Without dead ends: 124332 [2018-09-18 11:32:46,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1308 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:32:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124332 states. [2018-09-18 11:32:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124332 to 117427. [2018-09-18 11:32:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117427 states. [2018-09-18 11:32:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117427 states to 117427 states and 156326 transitions. [2018-09-18 11:32:49,938 INFO L78 Accepts]: Start accepts. Automaton has 117427 states and 156326 transitions. Word has length 328 [2018-09-18 11:32:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:49,938 INFO L480 AbstractCegarLoop]: Abstraction has 117427 states and 156326 transitions. [2018-09-18 11:32:49,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:32:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 117427 states and 156326 transitions. [2018-09-18 11:32:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-09-18 11:32:49,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:49,971 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:49,971 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:49,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1847930774, now seen corresponding path program 1 times [2018-09-18 11:32:49,972 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:49,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:49,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:49,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:49,973 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:50,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:50,240 INFO L197 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 [2018-09-18 11:32:50,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:50,248 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:50,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:50,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:50,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:50,677 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:50,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:50,692 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:50,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:52,392 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:52,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:32:52,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:32:52,682 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:32:52,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:32:52,683 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:32:52,684 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:32:52,685 INFO L87 Difference]: Start difference. First operand 117427 states and 156326 transitions. Second operand 9 states. [2018-09-18 11:33:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:08,886 INFO L93 Difference]: Finished difference Result 262865 states and 381616 transitions. [2018-09-18 11:33:08,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 11:33:08,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 365 [2018-09-18 11:33:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:09,529 INFO L225 Difference]: With dead ends: 262865 [2018-09-18 11:33:09,530 INFO L226 Difference]: Without dead ends: 145444 [2018-09-18 11:33:09,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1455 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:33:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145444 states. [2018-09-18 11:33:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145444 to 144868. [2018-09-18 11:33:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144868 states. [2018-09-18 11:33:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144868 states to 144868 states and 197083 transitions. [2018-09-18 11:33:15,693 INFO L78 Accepts]: Start accepts. Automaton has 144868 states and 197083 transitions. Word has length 365 [2018-09-18 11:33:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:15,694 INFO L480 AbstractCegarLoop]: Abstraction has 144868 states and 197083 transitions. [2018-09-18 11:33:15,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:33:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 144868 states and 197083 transitions. [2018-09-18 11:33:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-09-18 11:33:15,744 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:15,744 INFO L376 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, 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, 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] [2018-09-18 11:33:15,744 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1559817269, now seen corresponding path program 1 times [2018-09-18 11:33:15,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:15,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:15,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:15,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:15,746 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:33:16,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:16,486 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:33:16,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:16,497 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:16,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:33:16,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:33:17,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:17,057 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:33:17,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:17,074 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:17,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:33:17,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:33:18,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:33:18,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:33:18,260 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:33:18,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:33:18,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:33:18,262 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:33:18,262 INFO L87 Difference]: Start difference. First operand 144868 states and 197083 transitions. Second operand 9 states. [2018-09-18 11:33:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:35,404 INFO L93 Difference]: Finished difference Result 298703 states and 405261 transitions. [2018-09-18 11:33:35,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:33:35,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 401 [2018-09-18 11:33:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:36,039 INFO L225 Difference]: With dead ends: 298703 [2018-09-18 11:33:36,039 INFO L226 Difference]: Without dead ends: 153846 [2018-09-18 11:33:36,428 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1616 GetRequests, 1597 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:33:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153846 states. [2018-09-18 11:33:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153846 to 148612. [2018-09-18 11:33:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148612 states. [2018-09-18 11:33:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148612 states to 148612 states and 171603 transitions. [2018-09-18 11:33:39,180 INFO L78 Accepts]: Start accepts. Automaton has 148612 states and 171603 transitions. Word has length 401 [2018-09-18 11:33:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:39,181 INFO L480 AbstractCegarLoop]: Abstraction has 148612 states and 171603 transitions. [2018-09-18 11:33:39,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:33:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 148612 states and 171603 transitions. [2018-09-18 11:33:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-09-18 11:33:39,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:39,208 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:33:39,208 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -451543629, now seen corresponding path program 1 times [2018-09-18 11:33:39,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:39,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:39,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:39,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:39,210 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-18 11:33:39,549 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:33:39,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:33:39,549 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:33:39,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:33:39,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:33:39,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:33:39,550 INFO L87 Difference]: Start difference. First operand 148612 states and 171603 transitions. Second operand 3 states. [2018-09-18 11:33:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:45,896 INFO L93 Difference]: Finished difference Result 317031 states and 370491 transitions. [2018-09-18 11:33:45,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:33:45,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 417 [2018-09-18 11:33:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:46,376 INFO L225 Difference]: With dead ends: 317031 [2018-09-18 11:33:46,376 INFO L226 Difference]: Without dead ends: 168430 [2018-09-18 11:33:46,612 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:33:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168430 states. [2018-09-18 11:33:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168430 to 163759. [2018-09-18 11:33:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163759 states. [2018-09-18 11:33:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163759 states to 163759 states and 188896 transitions. [2018-09-18 11:33:49,812 INFO L78 Accepts]: Start accepts. Automaton has 163759 states and 188896 transitions. Word has length 417 [2018-09-18 11:33:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:49,813 INFO L480 AbstractCegarLoop]: Abstraction has 163759 states and 188896 transitions. [2018-09-18 11:33:49,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:33:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 163759 states and 188896 transitions. [2018-09-18 11:33:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-09-18 11:33:50,850 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:50,851 INFO L376 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:33:50,851 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash -405145337, now seen corresponding path program 1 times [2018-09-18 11:33:50,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:50,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:50,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:50,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:50,856 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:51,368 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:33:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 126 proven. 224 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:33:52,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:52,032 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:33:52,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:52,042 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:52,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-18 11:33:53,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-18 11:33:54,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:54,097 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:33:54,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:54,113 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:54,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:33:55,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 128 proven. 215 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:33:56,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:33:56,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 11:33:56,014 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:33:56,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:33:56,015 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:33:56,015 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:33:56,016 INFO L87 Difference]: Start difference. First operand 163759 states and 188896 transitions. Second operand 5 states. Received shutdown request... [2018-09-18 11:34:00,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:34:00,434 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:34:00,439 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:34:00,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:34:00 BoogieIcfgContainer [2018-09-18 11:34:00,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:34:00,440 INFO L168 Benchmark]: Toolchain (without parser) took 223225.46 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,442 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-18 11:34:00,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2214.93 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 259.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,446 INFO L168 Benchmark]: Boogie Preprocessor took 907.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,447 INFO L168 Benchmark]: RCFGBuilder took 11679.70 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 647.8 MB). Peak memory consumption was 647.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,452 INFO L168 Benchmark]: TraceAbstraction took 208157.30 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -810.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:00,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2214.93 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 259.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 907.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11679.70 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 647.8 MB). Peak memory consumption was 647.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208157.30 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -810.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (163759states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (71507 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 164.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3182 SDtfs, 44305 SDslu, 2667 SDs, 0 SdLazy, 82976 SolverSat, 19565 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 123.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9757 GetRequests, 9585 SyntacticMatches, 35 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163759occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 21658 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 8596 NumberOfCodeBlocks, 8596 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 13356 ConstructedInterpolants, 0 QuantifiedInterpolants, 15562281 SizeOfPredicates, 4 NumberOfNonLiveVariables, 7415 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 6829/7591 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-34-00-474.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-34-00-474.csv Completed graceful shutdown